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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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A record is under an engine, a drive or a series only where it says so: the characters of the vehicle identification number filed with a complaint, its text, or what its document says it applies to. A record that does not say is kept as "not stated". The filed numbers and the documents do not tell 4WD from AWD.

Common on this vehicle:Gauge or instrument faultVibration or shudderWarning lightAir conditioning or heaterHard start or long crankMisfire or rough idleDoes not startSeat belt

since2023-10-09Remove

Record by record

73 records state a cause or a remedy. Each record is shown as short labels in the order fault → finding the cause → correction. Press a label to narrow to the records that state it.

Symptom

Component named as the cause

A ribbon is as wide as the records that state both of its ends (only the commonest are drawn). A record that names several symptoms or components runs through each. Orange is records that say the fault came back or was not fixed. Results come from owners’ reports only; one that does not say is “result not stated”. None of this is a likelihood of a cause or a rate at which work succeeds.

Read the records one by one (29)

Known issuesCastech cylinder head porosity crack (gradual coolant loss)1

  1. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2024-03-19

    Internal Coolant Leak from Cylinder Head Location

    1. 1Fault

      • Some vehicles may experience a gradual coolant loss over time.

    2. 2Finding the cause

      Possible causes

      • A very low percentage of cylinder heads manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.

      Steps to confirm (in the document’s order)

      1. Check whether the head is a Castech casting by looking for the casting logo on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.
      2. If the head is a Castech casting, inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time.
      3. The crack can be in any of the five cylinder head oil drains and shows as a clean or shiny area on an otherwise stained surface.
      4. Pressurizing the cooling system at this time may reveal coolant, air, or a combination weeping in the described area.

    3. 3Correction

      Repair

      • If inspection reveals evidence of coolant witness marks, replace the entire cylinder head assembly.

      Caution

      • If the cylinder heads are not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
      • If no evidence of coolant loss is found on inspection of Castech casting cylinder heads, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2001-2006 GMC Envoy, Jimmy, Sierra and Yukon models, among other listed GM models, with the 4.8L, 5.3L or 5.7L VORTEC GEN III, GEN IV V8 engine.
    • Condition：Some vehicles may experience a gradual coolant loss over time.
    • Cause：A very low percentage of cylinder heads manufactured with an embossed Castech logo may develop a porosity crack in a very specific area.
    • Confirm：Check whether the head is a Castech casting by looking for the casting logo on top of the intake port, under the rocker arm support rail and in the spring deck cavity portion of the cylinder head.
    • Confirm：If the head is a Castech casting, inspect the area around the five oil drain holes for witness marks indicating coolant seepage over time.
    • Confirm：The crack can be in any of the five cylinder head oil drains and shows as a clean or shiny area on an otherwise stained surface.
    • Confirm：Pressurizing the cooling system at this time may reveal coolant, air, or a combination weeping in the described area.
    • Repair：If inspection reveals evidence of coolant witness marks, replace the entire cylinder head assembly.
    • Caution：If the cylinder heads are not a Castech casting, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.
    • Caution：If no evidence of coolant loss is found on inspection of Castech casting cylinder heads, follow normal diagnostic procedures in SI to determine the cause of the coolant loss.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin advises the technician of possible location of an internal coolant leak from a specific cylinder head and location.

Known issuesSome OnStar features no longer work (2G cellular sunset; the module is not broken)1

  1. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2025-04-28

    OnStar Module 2G Sunset Information

    1. 1Fault

      • Customers may comment on a notification and/or that some 2G OnStar module features are no longer operable.
      • One of the listed concerns is being unable to contact the OnStar Call Center.
      • All other functions within the OnStar module are unaffected, such as OnStar remote link, Bluetooth, microphone, and GPS.

    2. 2Finding the cause

      Possible causes

      • On December 31, 2022, the 2G cellular signal will no longer be active, causing some OnStar module features to be inoperable.
      • The 2G CDMA cellular network was decommissioned across Canada in 2015.

      Steps to confirm (in the document’s order)

      • Any other function in the Telematics Communication Interface Control Module (other than OnStar) is to be diagnosed as directed by SI.

    3. 3Correction

      Repair

      • The OnStar guardian app is being used as a replacement for the OnStar portion of the module.

      Caution

      • Do not replace the OnStar module because of the 2G shutdown.
      • If the vehicle is brought in for inactive/broken/inoperable OnStar features, do not replace the module; the module is not broken.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GMC Yukon models, model years 2003 to 2014.
    • Applies to：The involved region is North America.
    • Condition：Customers may comment on a notification and/or that some 2G OnStar module features are no longer operable.
    • Condition：One of the listed concerns is being unable to contact the OnStar Call Center.
    • Condition：All other functions within the OnStar module are unaffected, such as OnStar remote link, Bluetooth, microphone, and GPS.
    • Cause：On December 31, 2022, the 2G cellular signal will no longer be active, causing some OnStar module features to be inoperable.
    • Caution：Do not replace the OnStar module because of the 2G shutdown.
    • Caution：If the vehicle is brought in for inactive/broken/inoperable OnStar features, do not replace the module; the module is not broken.
    • Repair：The OnStar guardian app is being used as a replacement for the OnStar portion of the module.
    • Confirm：Any other function in the Telematics Communication Interface Control Module (other than OnStar) is to be diagnosed as directed by SI.
    • Cause：The 2G CDMA cellular network was decommissioned across Canada in 2015.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

Known issuesSpeedometer needle appears inaccurate (specification +/- 2 MPH)1

  1. Manufacturer communication2003–2006 GMC YUKON ・ 2024-08-13

    Speedometer Needle Accuracy Preliminary Information

    1. 1Fault

      • A customer may say the speedometer needle appears inaccurate.

    2. 2Finding the cause

      Possible causes

      • An instrument panel cluster with a physical speedometer needle drives the needle electrically with a stepper motor, and some variation in accuracy is possible.

      Steps to confirm (in the document’s order)

      1. Digital readouts such as the "Digital Speedometer" on the DIC read the Vehicle Speed Sensor (VSS) directly and are much more accurate.
      2. The specification for needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle. Â

      What the documents say to do

      Speedometer needle appears inaccurate (specification +/- 2 MPH)

      Confirm

      • The needle accuracy specification is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

      Caution

      • Tire size, tread life and inflation may cause some variation in the readings.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2003 - 2024 GMC Yukon models (note: the years run later than the years this service covers).
    • Condition：A customer may say the speedometer needle appears inaccurate.
    • Cause：An instrument panel cluster with a physical speedometer needle drives the needle electrically with a stepper motor, and some variation in accuracy is possible.
    • Confirm：Digital readouts such as the "Digital Speedometer" on the DIC read the Vehicle Speed Sensor (VSS) directly and are much more accurate.
    • Confirm：The specification for needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH (= 3.22 km/h) at any given speed when looking straight at the needle. Â

ELECTRICAL SYSTEM8

  1. Owner complaint2004 GMC YUKON ・ 2025-03-05

    Power loss and shaking while driving at 45 MPH; multiple repairs unsuccessful

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

      The vehicle was not repaired for the most recent failure.

    Read the sentences of the record
    Fault
    The contact stated while driving 45 MPH (= 72.4 km/h), the vehicle started losing motive power. (3 more)
    Remedy
    The vehicle was not repaired for the most recent failure.
    Inspection
    The vehicle was taken to an independent mechanic where it was diagnosed with throttle body failure; however, the failure persisted.
    Outcome
    The vehicle was repaired but the failure persisted three more times with different diagnoses.

  2. Manufacturer communication2000–2006 GMC YUKON ・ 2024-10-25

    Tire Pressure Monitor and Diagnostic Tools Software Update

    1. 1Fault

      • The process for reaching the GM Tools site has changed.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：All brands and models, model years 1995 - 2025.
    • Condition：The process for reaching the GM Tools site has changed.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-08-26

    GM Vehicle Wide Programming (VWP) Software Update Process

    1. 1Fault

      • Vehicle Wide Programming (VWP) is a new process to update software on GM vehicles.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Various GM makes and models.
    • Condition：Vehicle Wide Programming (VWP) is a new process to update software on GM vehicles.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected modules (with some exceptions). The updating of modules is completed in parallel instead of the technician needing to update one module at a time. This allows a more streamlined approach for dealers and customers.

  4. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-06-25

    Service Programming System Error Codes E4398-E6961 Service Information

    1. 1Fault

      • Some technicians may notice Service Programming System (SPS) errors; the document gives the troubleshooting for them.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and light duty trucks, model years 2000 to 2025.
    • Condition：Some technicians may notice Service Programming System (SPS) errors; the document gives the troubleshooting for them.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.

  5. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2024-05-16

    Aftermarket ALDL/DLC Interface Device Concerns

    1. 1Fault

      • Customers report various issues related to high or low speed data bus traffic.
      • Bus or LAN traffic may stay active, leading to a discharged vehicle battery.
      • C0561 stored in the EBCM, leading to a traction control issue.
      • SES, MIL or CEL light on with numerous communication DTCs such as U0100, U0101, U186B and U1862.

    2. 2Finding the cause

      Possible causes

      • Monitoring devices and other electronic accessories such as aftermarket cruise control or police speed checking devices (RADAR or LIDAR) may cause one or more of the listed concerns.
      • Many of the problems could come from an open connection on the HSCAN bus; a device that connects to only one CAN + causes bus errors and erratic ECU behavior.

      Steps to confirm (in the document’s order)

      • If normal SI diagnostics find no other root cause, check for a device plugged into the ALDL or Data Link Connector (DLC) for tracking and/or maintenance interval scheduling.

    3. 3Correction

      Repair

      1. If SI diagnostics do not find the source and the device is available, try to duplicate the condition, then remove the device to see whether the condition is eliminated.
      2. If removing the DLC interface device resolves the concern, tell the customer the result and that they should work with the device's supplier for further resolution.

      Caution

      • The device and the rest of its harness can be hidden out of sight, and the technician may not notice that the diagnostic connector is not in the factory location.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2025 and prior GM passenger cars and trucks (including BrightDrop).
    • Applies to：The bulletin is written with a focus on full size trucks, full size vans and other fleet vehicles, but could apply to any vehicle.
    • Condition：Customers report various issues related to high or low speed data bus traffic.
    • Condition：Bus or LAN traffic may stay active, leading to a discharged vehicle battery.
    • Condition：C0561 stored in the EBCM, leading to a traction control issue.
    • Condition：SES, MIL or CEL light on with numerous communication DTCs such as U0100, U0101, U186B and U1862.
    • Confirm：If normal SI diagnostics find no other root cause, check for a device plugged into the ALDL or Data Link Connector (DLC) for tracking and/or maintenance interval scheduling.
    • Cause：Monitoring devices and other electronic accessories such as aftermarket cruise control or police speed checking devices (RADAR or LIDAR) may cause one or more of the listed concerns.
    • Cause：Many of the problems could come from an open connection on the HSCAN bus; a device that connects to only one CAN + causes bus errors and erratic ECU behavior.
    • Caution：The device and the rest of its harness can be hidden out of sight, and the technician may not notice that the diagnostic connector is not in the factory location.
    • Repair：If SI diagnostics do not find the source and the device is available, try to duplicate the condition, then remove the device to see whether the condition is eliminated.
    • Repair：If removing the DLC interface device resolves the concern, tell the customer the result and that they should work with the device's supplier for further resolution.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    The intent of this service bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.

  6. Manufacturer communication2006 GMC YUKON ・ 2024-05-06

    Magnetically Controlled Suspension Electrical Connector Not Seated

    1. 1Fault

      • The subject names a Service Suspension System message with DTCs C0575, C0580, C0585 or C0590.
      • Some customers may comment on a Service Suspension System message displayed on the Drivers Information Center (DIC).

    2. 2Finding the cause

      Possible causes

      • During assembly, the 90 degree electrical connector at the top end of a shock absorber (actuator) may not have been fully seated, or may have been bumped firmly enough to partially disconnect it or create an internal contact concern.

      Steps to confirm (in the document’s order)

      1. Visually examine the green insulator and center post of the electrical connector to make sure it is straight and in serviceable condition; replace the connector and retest if required.
      2. Reconnect the electrical connector to the shock absorber (actuator), clear the suspension DTC and confirm that the code does not reset.
      3. If the code returns, remove the electrical connector from the shock absorber (actuator) and pigtail, and swap it with the connector on the opposite side shock absorber (actuator).

    3. 3Correction

      Repair

      • If the DTC follows the connector to the other side, replace the connector; if not, refer to SI and follow the diagnostics for the DTC originally found.

      Parts

      • Part number 19180262, Connector, S/ABS Elec Susp Control.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • Complete the document's steps before attempting shock absorber (actuator) replacement.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list includes the 2006-2014 GMC Yukon and Yukon XL.
    • Applies to：It applies to vehicles equipped with RPO F55, Z55 or Z95.
    • Condition：The subject names a Service Suspension System message with DTCs C0575, C0580, C0585 or C0590.
    • Condition：Some customers may comment on a Service Suspension System message displayed on the Drivers Information Center (DIC).
    • Cause：During assembly, the 90 degree electrical connector at the top end of a shock absorber (actuator) may not have been fully seated, or may have been bumped firmly enough to partially disconnect it or create an internal contact concern.
    • Caution：Complete the document's steps before attempting shock absorber (actuator) replacement.
    • Confirm：Visually examine the green insulator and center post of the electrical connector to make sure it is straight and in serviceable condition; replace the connector and retest if required.
    • Confirm：Reconnect the electrical connector to the shock absorber (actuator), clear the suspension DTC and confirm that the code does not reset.
    • Confirm：If the code returns, remove the electrical connector from the shock absorber (actuator) and pigtail, and swap it with the connector on the opposite side shock absorber (actuator).
    • Repair：If the DTC follows the connector to the other side, replace the connector; if not, refer to SI and follow the diagnostics for the DTC originally found.
    • Parts：Part number 19180262, Connector, S/ABS Elec Susp Control.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    Magnetically Controlled Suspension Electrical Connector Not Seated.

  7. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2024-04-05

    Electrical Ground Repair Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • Loose, stripped or corroded ground connections increase the possibility of improper system function and loss of module communication, and may lead to unnecessary repairs and component replacement.

    3. 3Correction

      Repair

      1. For a damaged or missing M6 ground stud, select an adjacent location with 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance around the M6 conductive rivet stud flange.
      2. Drill a 10 mm (0.40 in) diameter hole through the panel.
      3. Remove paint and primer from the area around the 10 mm (0.40 in) hole until bare metal is visible.
      4. Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.
      5. Install the M6 conductive nut to the rivet stud and tighten to 71 lb in (= 8.02 N·m).

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      2 more points

      Parts

      • Conductive-finish fasteners: 11561645 M6 nut, 11570340 M6 rivet stud, 11588564 M8 bolt, 11609412 M8 nut, 11609538 M7 bolt (self-threading), 11609669 M6 bolt.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.
      • The rivet stud and surrounding panel area must be refinished before the ground wire terminal and conductive nut are installed, to keep the ground secure, stable and corrosion-free.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and earlier GM passenger cars and trucks, including medium duty and heavy duty.
    • Cause：Loose, stripped or corroded ground connections increase the possibility of improper system function and loss of module communication, and may lead to unnecessary repairs and component replacement.
    • Caution：Use only the GM-approved replacement fasteners with conductive finish for electrical ground repair.
    • Repair：For a damaged or missing M6 ground stud, select an adjacent location with 20 mm (0.79 in) clearance behind the panel surface and 20 mm (0.79 in) clearance around the M6 conductive rivet stud flange.
    • Repair：Drill a 10 mm (0.40 in) diameter hole through the panel.
    • Repair：Remove paint and primer from the area around the 10 mm (0.40 in) hole until bare metal is visible.
    • Caution：The rivet stud and surrounding panel area must be refinished before the ground wire terminal and conductive nut are installed, to keep the ground secure, stable and corrosion-free.
    • Repair：Using a small brush, apply Dielectric Lubricant GM P/N 12377900 (Canadian P/N 10953529) to the threads of the M6 conductive rivet stud.
    • Repair：Install the M6 conductive nut to the rivet stud and tighten to 71 lb in (= 8.02 N·m).
    • Repair：If the M6 weld nut at the ground location is damaged or stripped, a M7 conductive self-threading bolt may be used to secure the ground wire terminal.
    • Repair：Install the M7 conductive self-threading bolt and tighten to 80 lb in (= 9.04 N·m).
    • Parts：Conductive-finish fasteners: 11561645 M6 nut, 11570340 M6 rivet stud, 11588564 M8 bolt, 11609412 M8 nut, 11609538 M7 bolt (self-threading), 11609669 M6 bolt.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.

  8. Manufacturer communication2006 GMC YUKON DENALI ・ 2024-02-12

    High Voltage Safety – High Voltage Disabling

    1. 1Fault

      • Attempting repairs or service without the appropriate training, tools and equipment could cause death or injury.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      High Voltage Safety ? High Voltage Disabling

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2015 and prior GM extended range electric, electric, Two-Mode Hybrid or e-Assist vehicles.
    • Condition：Attempting repairs or service without the appropriate training, tools and equipment could cause death or injury.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    High Voltage Safety ? High Voltage Disabling

UNKNOWN OR OTHER7

  1. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2025-07-23(1 earlier editions of this document folded here)

    TAC diagnostic assistance pico file requirement

    1. 1Fault

      • Vehicle vibration under any of various driving conditions.

    2. 2Finding the cause

      Possible causes

      • Vibration could be caused by many various components and conditions.

      Steps to confirm (in the document’s order)

      • Drive the vehicle to verify the condition and record a Pico data file of the concern.

    3. 3Correction

      Repair

      • Repair the vehicle using the Pico information along with any published information relevant to the vibration frequency observed.

      Caution

      • Just as a check engine light is not repaired without knowing the stored DTC, a vibration should not be repaired without knowing its frequency.
      • Bulletin 12-03-10-001B is a generic document about tire to rim orientation and the tire slipping on the rim.
      • Component level vibrations such as a blower motor, brake pulsation or shudder on turns do not require a Pico file.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all 2000 to 2026 models.
    • Condition：Vehicle vibration under any of various driving conditions.
    • Cause：Vibration could be caused by many various components and conditions.
    • Caution：Just as a check engine light is not repaired without knowing the stored DTC, a vibration should not be repaired without knowing its frequency.
    • Confirm：Drive the vehicle to verify the condition and record a Pico data file of the concern.
    • Repair：Repair the vehicle using the Pico information along with any published information relevant to the vibration frequency observed.
    • Caution：Bulletin 12-03-10-001B is a generic document about tire to rim orientation and the tire slipping on the rim.
    • Caution：Component level vibrations such as a blower motor, brake pulsation or shudder on turns do not require a Pico file.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

  2. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2025-06-04(3 earlier editions of this document folded here)

    J-35616-64B and Mini 50 Terminal Test Probe Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • Terminal tension is one of the main culprits in intermittent electrical concerns, especially with very small terminals.

      Steps to confirm (in the document’s order)

      1. Use the J-35616-64B test probe to check tension on, or probe, the .64 series terminals.
      2. Use the EL-35616-58 test probe to check terminal tension on the Mini .50 series terminals.

    3. 3Correction

      Repair

      • The terminal can also be used to make jumper wires; crimp it with tool J-38125-641, jaw "H" for 22ga wire, "J" for 20 ga or "K" for 18 ga.

      Parts

      • A .64 terminated lead is GM part number 13505346, ordered from GM CCA parts.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • Always refer to the Connector End View in Service Information to determine the correct test probe.
      • A bent, damaged, worn or broken EL-35616-58 must be replaced, as no male terminals are available for it at this time.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all models, 2005 - 2026.
    • Cause：Terminal tension is one of the main culprits in intermittent electrical concerns, especially with very small terminals.
    • Confirm：Use the J-35616-64B test probe to check tension on, or probe, the .64 series terminals.
    • Confirm：Use the EL-35616-58 test probe to check terminal tension on the Mini .50 series terminals.
    • Caution：Always refer to the Connector End View in Service Information to determine the correct test probe.
    • Repair：The terminal can also be used to make jumper wires; crimp it with tool J-38125-641, jaw "H" for 22ga wire, "J" for 20 ga or "K" for 18 ga.
    • Parts：A .64 terminated lead is GM part number 13505346, ordered from GM CCA parts.
    • Caution：A bent, damaged, worn or broken EL-35616-58 must be replaced, as no male terminals are available for it at this time.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

  3. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2024-10-17

    Field Product Report (FPR) Submission Guidelines

    1. 1Fault

      • The bulletin gives dealers and technicians information on when and how to submit a Field Product Report (FPR).

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2025 and prior GM passenger cars and light/medium duty trucks.
    • Condition：The bulletin gives dealers and technicians information on when and how to submit a Field Product Report (FPR).

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).

  4. Manufacturer communication2000–2006 GMC YUKON ・ 2024-09-12(1 earlier editions of this document folded here)

    Heater-Vent-Air Conditioning Warm Air Issue

    1. 1Fault

      • The A/C blows warm or A/C performance is poor.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. Record the A/C high and low pressures from actual A/C gauges, the high side sensor reading from GDS, and the A/C compressor duty cycle.
      2. Also record the outside temperature, humidity and vent temperature.
      3. With an automatic HVAC system, read the evaporator temperature sensor (if equipped), inside temperature sensor, outside temperature sensor and duct temperature sensors with the scan tool.

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all models, 2000 - 2024.
    • Condition：The A/C blows warm or A/C performance is poor.
    • Confirm：Record the A/C high and low pressures from actual A/C gauges, the high side sensor reading from GDS, and the A/C compressor duty cycle.
    • Confirm：Also record the outside temperature, humidity and vent temperature.
    • Confirm：With an automatic HVAC system, read the evaporator temperature sensor (if equipped), inside temperature sensor, outside temperature sensor and duct temperature sensors with the scan tool.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

  5. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2024-09-06

    Tire and Wheel Size Change Information

    1. 1Fault

      • A request may be made to change the tire size on a vehicle.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • A calibration exists if, using the sales order guide, a vehicle of the same make, model year and trim can be built with that tire within the restrictions in the tire section.

    3. 3Correction

      Caution

      • GM supports a tire calibration only for tires that have been sized, tested and designed for the vehicle in question and its applications.
      • There may be a cost to the customer for this service; it is not covered under the manufacturer's warranty.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model table lists all brands and models for model years 2003 - 2025, with exceptions marked.
    • Applies to：Silverado Med Duty and LCF models are excepted.
    • Condition：A request may be made to change the tire size on a vehicle.
    • Caution：GM supports a tire calibration only for tires that have been sized, tested and designed for the vehicle in question and its applications.
    • Confirm：A calibration exists if, using the sales order guide, a vehicle of the same make, model year and trim can be built with that tire within the restrictions in the tire section.
    • Caution：There may be a cost to the customer for this service; it is not covered under the manufacturer's warranty.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.

  6. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-07-12(1 earlier editions of this document folded here)

    Product Assistance Claim (PAC) Information Bulletin

    1. 1Fault

      • The bulletin describes how to work with GM on a Product Assistance Claim (PAC); it is for the U.S. only.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2025 and prior passenger cars and light/medium duty trucks.
    • Condition：The bulletin describes how to work with GM on a Product Assistance Claim (PAC); it is for the U.S. only.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.

  7. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2024-05-31

    Warranty Administration Bulletin – Personal Property Damage Process

    1. 1Fault

      • The bulletin gives the policies and warranty transaction procedures for the Personal Property Damage process.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2025 and prior GM passenger cars and light duty trucks.
    • Condition：The bulletin gives the policies and warranty transaction procedures for the Personal Property Damage process.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.

ENGINE2

  1. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2024-09-05

    Engine Oil Consumption Service Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • Towing a trailer increases oil consumption and may put it outside the normal accepted rate given for an unloaded vehicle in personal use.
      • On vehicles usually driven short distances, less than 8 km (5 mi), especially in colder weather, unburned fuel and condensation may not evaporate out of the oil, and the dipstick may show the level as over-full.

      Steps to confirm (in the document’s order)

      1. Inspect the oil pan and engine covers for leakage due to over-tightened, damaged or out of place gaskets.
      2. Verify that the dipstick tube is fully seated in the block.
      3. Let the vehicle sit for at least 15 minutes after the engine has been shut off before reading the oil level.
      4. Verify that the positive crankcase ventilation (PCV) system is operating properly; blockages, restrictions or damage to it can increase oil use.
      5. Do not test oil economy until the vehicle has accumulated at least 6400 km (4000 mi).
      1 more points

    3. 3Correction

      Repair

      • If the final evaluation shows the engine uses more than 0.946 liter (1 qt) in 3200 km (2000 mi), follow the published symptom diagnostics in the appropriate Service Manual.

      Caution

      • The accepted rate of oil consumption for these engines is 0.946 liter (1 qt) in 3200 km (2000 mi).
      • This rate does not apply to vehicles driven aggressively, at high RPM, at high speeds, or (for trucks) loaded; oil consumption under these conditions will be more.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2025 and prior GM passenger cars and gasoline-powered light duty trucks under 8500 LB GVW.
    • Caution：The accepted rate of oil consumption for these engines is 0.946 liter (1 qt) in 3200 km (2000 mi).
    • Caution：This rate does not apply to vehicles driven aggressively, at high RPM, at high speeds, or (for trucks) loaded; oil consumption under these conditions will be more.
    • Confirm：Inspect the oil pan and engine covers for leakage due to over-tightened, damaged or out of place gaskets.
    • Confirm：Verify that the dipstick tube is fully seated in the block.
    • Confirm：Let the vehicle sit for at least 15 minutes after the engine has been shut off before reading the oil level.
    • Cause：Towing a trailer increases oil consumption and may put it outside the normal accepted rate given for an unloaded vehicle in personal use.
    • Confirm：Verify that the positive crankcase ventilation (PCV) system is operating properly; blockages, restrictions or damage to it can increase oil use.
    • Cause：On vehicles usually driven short distances, less than 8 km (5 mi), especially in colder weather, unburned fuel and condensation may not evaporate out of the oil, and the dipstick may show the level as over-full.
    • Confirm：Do not test oil economy until the vehicle has accumulated at least 6400 km (4000 mi).
    • Confirm：For the test, verify the oil level is at, but not above, the full mark on the dipstick and that oil of the proper viscosity and quality is used.
    • Repair：If the final evaluation shows the engine uses more than 0.946 liter (1 qt) in 3200 km (2000 mi), follow the published symptom diagnostics in the appropriate Service Manual.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.

  2. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-07-16(1 earlier editions of this document folded here)

    Fuel Injection Cleaner Kit Service Bulletin

    1. 1Fault

      • Rough idle, crank no start, extended crank or misfire, with the engine warning lamp on and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 set.
      • When the engine is cold, compression on multiple cylinders may be zero.
      • The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.

    2. 2Finding the cause

      Possible causes

      • Major carbon build-up on the intake and/or exhaust valves from fuel contamination or incomplete burning of the fuel; misfires should not appear before at least 8,000 km (5,000 mi).

    3. 3Correction

      Repair

      1. If there is no valve damage and no cam follower out of place, perform the cleaning procedure to free sticking valves and remove carbon from the valves and pistons.
      2. If valves are damaged or cam followers are out of place, make the engine mechanical repairs first and then perform the cleaning procedure to prevent a return.
      3. Fill Cleaner Kit J-35800-A with about 650 ml (22 oz, 2 cans) of Air Intake, Combustion Chamber Cleaner and set the air pressure at the tool to 260 kPa (40 psi).
      4. With GDS 2 or a scan tool, command engine idle to 2000 rpm so the engine does not stall.
      5. With the engine at operating temperature in a well-ventilated area, slowly and carefully induce the cleaner into the engine, taking about 3 minutes.

      Parts

      • The Top Engine Cleaning Kit (ACDelco Air Intake, Valve and Combustion Chamber Cleaner and ACDelco Fuel System Cleaner 44K) is 19435372 for the U.S. and Canada.

      Part numbers printed in the document

      The numbers are as the document prints them. The name and the replacing number are what the pages of GMPartsGiant, a reseller of genuine parts and not GM, state. Aftermarket equivalents are not checked here (the links only search by number). Confirm the fit for the vehicle (VIN) before ordering.

      Caution

      • Inducing too much cleaner at too low an RPM, or stalling the engine with too much cleaner at once, may hydro-lock the engine and bend a connecting rod.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks with gasoline engines only, model years 2000 to 2025.
    • Condition：Rough idle, crank no start, extended crank or misfire, with the engine warning lamp on and DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 or P0308 set.
    • Condition：When the engine is cold, compression on multiple cylinders may be zero.
    • Condition：The engine may pop through the intake or exhaust while cranking, and the spark plugs may be fuel fouled.
    • Cause：Major carbon build-up on the intake and/or exhaust valves from fuel contamination or incomplete burning of the fuel; misfires should not appear before at least 8,000 km (5,000 mi).
    • Repair：If there is no valve damage and no cam follower out of place, perform the cleaning procedure to free sticking valves and remove carbon from the valves and pistons.
    • Repair：If valves are damaged or cam followers are out of place, make the engine mechanical repairs first and then perform the cleaning procedure to prevent a return.
    • Caution：Inducing too much cleaner at too low an RPM, or stalling the engine with too much cleaner at once, may hydro-lock the engine and bend a connecting rod.
    • Repair：Fill Cleaner Kit J-35800-A with about 650 ml (22 oz, 2 cans) of Air Intake, Combustion Chamber Cleaner and set the air pressure at the tool to 260 kPa (40 psi).
    • Repair：With GDS 2 or a scan tool, command engine idle to 2000 rpm so the engine does not stall.
    • Repair：With the engine at operating temperature in a well-ventilated area, slowly and carefully induce the cleaner into the engine, taking about 3 minutes.
    • Parts：The Top Engine Cleaning Kit (ACDelco Air Intake, Valve and Combustion Chamber Cleaner and ACDelco Fuel System Cleaner 44K) is 19435372 for the U.S. and Canada.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.

ENGINE AND ENGINE COOLING2

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-02-29

    Oil Cooler, Oil Cooler Lines, and Oil Tank Replacement Service Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Possible causes

      • Debris from a damaged rod or main bearing is sent directly through the oil galleries and the components in the lubrication circuit.

    3. 3Correction

      Repair

      1. Whenever an engine assembly is replaced for a connecting rod or crankshaft main bearing failure, also replace the oil cooler, oil cooler lines, oil tank and turbocharger, if equipped.
      2. If the oil cooler is part of the radiator assembly, the radiator must be replaced along with the other required components.

      Caution

      • Reinstalling an oil cooler or cooler line from an engine with bearing failure debris may carry remaining debris into the new service engine.
      • Some service engines come with the oil cooler and/or oil cooler lines already attached; those need not be replaced.
      • Not every engine with bearing damage requires the oil cooler, lines or oil tank, or even the engine, to be replaced.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to all GM passenger cars and trucks, 2000 through 2024, gasoline engines only.
    • Repair：Whenever an engine assembly is replaced for a connecting rod or crankshaft main bearing failure, also replace the oil cooler, oil cooler lines, oil tank and turbocharger, if equipped.
    • Repair：If the oil cooler is part of the radiator assembly, the radiator must be replaced along with the other required components.
    • Cause：Debris from a damaged rod or main bearing is sent directly through the oil galleries and the components in the lubrication circuit.
    • Caution：Reinstalling an oil cooler or cooler line from an engine with bearing failure debris may carry remaining debris into the new service engine.
    • Caution：Some service engines come with the oil cooler and/or oil cooler lines already attached; those need not be replaced.
    • Caution：Not every engine with bearing damage requires the oil cooler, lines or oil tank, or even the engine, to be replaced.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system.

  2. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2024-02-17

    Warranty Admin Service Bulletin - Engine/Transmission Replacement

    1. 1Fault

      • Under GM Service Policies and Procedures, dealers are to perform the most cost economical repair when deciding between assembly repair and replacement.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and light duty trucks in Canada, model years 2005 to 2025.
    • Condition：Under GM Service Policies and Procedures, dealers are to perform the most cost economical repair when deciding between assembly repair and replacement.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This Warranty Admin service bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.

EQUIPMENT2

  1. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2024-04-01

    XM Audio Traffic and Travel Link Availability and Operation

    1. 1Fault

      • A customer may have questions about which XM offerings are available for their vehicle.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      XM Audio Traffic And Travel Link Availability And Operation.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2002-2015 GM passenger cars and light-duty trucks with XM radio.
    • Condition：A customer may have questions about which XM offerings are available for their vehicle.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    XM Audio Traffic And Travel Link Availability And Operation.

  2. Manufacturer communication2006 GMC YUKON DENALI ・ 2024-03-19

    GM Courtesy Transportation and Roadside Assistance Policy

    1. 1Fault

      • Courtesy Transportation and Roadside Assistance are not part of the coverage of the New Vehicle Limited Warranty.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and prior GM passenger cars and trucks, including medium duty.
    • Condition：Courtesy Transportation and Roadside Assistance are not part of the coverage of the New Vehicle Limited Warranty.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This warranty administration bulletin provides policy information for GM courtesy transportation and roadside assistance programs.

POWER TRAIN2

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2024-08-15

    Transmission Core Damage Prevention Notice

    1. 1Fault

      • GM is receiving many cracked or broken transmission cores at the remanufacturing facilities, and the damage makes them unusable for remanufacturing.

    2. 2Finding the cause

    3. 3Correction

      GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2000 to 2024 GM passenger cars, SUVs and light/medium duty trucks.
    • Condition：GM is receiving many cracked or broken transmission cores at the remanufacturing facilities, and the damage makes them unusable for remanufacturing.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the dealers to be more careful not to damage the transmissions during removal and to package the core properly for return.

  2. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2024-06-07

    Water or Ethylene Glycol in Transmission Fluid

    1. 1Fault

      • Water or ethylene glycol in ATF changes the friction of the clutches, frequently causing shudder during engagement or gear changes, especially during torque converter clutch engagement.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. An indication of water in the ATF: ATF blowing out of the transmission vent tube.
      2. The ATF may appear cloudy or, with extreme contamination, look like a strawberry milkshake.
      3. There may be visible water in the oil pan or a milky white substance inside the pan area.
      4. Spacer plate gaskets appear swollen or wrinkled in areas where they are not compressed.
      5. If water is found in the ATF and its source is not identified, or a leaking in-radiator transmission oil cooler is suspected, a simple and quick test kit that detects ethylene glycol in ATF is available.
      1 more points

    3. 3Correction

      Repair

      1. If water or coolant is found in the transmission, all rubber-type seals, all composition-faced clutch plates and/or bands, all nylon parts and the torque converter must be replaced.
      2. Thoroughly clean and rebuild the transmission, using new gaskets and oil filter.
      3. Flush and flow check the transmission oil cooler using J-45096.
      4. Thoroughly inspect the engine cooling system and hoses and clean/repair as necessary.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2025 and prior GM passenger cars and trucks equipped with an automatic transmission.
    • Condition：Water or ethylene glycol in ATF changes the friction of the clutches, frequently causing shudder during engagement or gear changes, especially during torque converter clutch engagement.
    • Confirm：An indication of water in the ATF: ATF blowing out of the transmission vent tube.
    • Confirm：The ATF may appear cloudy or, with extreme contamination, look like a strawberry milkshake.
    • Confirm：There may be visible water in the oil pan or a milky white substance inside the pan area.
    • Confirm：Spacer plate gaskets appear swollen or wrinkled in areas where they are not compressed.
    • Confirm：If water is found in the ATF and its source is not identified, or a leaking in-radiator transmission oil cooler is suspected, a simple and quick test kit that detects ethylene glycol in ATF is available.
    • Confirm：Obtain the Gly-Tek test kit from the Nelco Company and test the ATF to decide accurately whether the radiator needs to be replaced.
    • Repair：If water or coolant is found in the transmission, all rubber-type seals, all composition-faced clutch plates and/or bands, all nylon parts and the torque converter must be replaced.
    • Repair：Thoroughly clean and rebuild the transmission, using new gaskets and oil filter.
    • Repair：Flush and flow check the transmission oil cooler using J-45096.
    • Repair：Thoroughly inspect the engine cooling system and hoses and clean/repair as necessary.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.

SEATS1

  1. Manufacturer communication2006 GMC YUKON DENALI ・ 2024-05-16

    Interior Cleaning Products - Availability

    1. 1Fault

      • The document covers interior cleaning of the instrument panel, hard or plastic surfaces, seats, carpet, leather and vinyl, and the availability of cleaner, stain remover and restorer products.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This service bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2025 and prior GM passenger cars and trucks (including medium duty).
    • Condition：The document covers interior cleaning of the instrument panel, hard or plastic surfaces, seats, carpet, leather and vinyl, and the availability of cleaner, stain remover and restorer products.

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin includes information on Interior Cleaning - Instrument Panel (IP), Hard or Plastic Surfaces, Seats, Carpet, Leather, Vinyl, Fabric Cleaner, Stain Remover, Restorer - Product Availability.

SERVICE BRAKES1

  1. Owner complaint2002 GMC YUKON ・ 2025-08-14

    Loss of brakes during driving; airbags deployed

    1. 1Fault

      Then, when I reached for the brakes again, it didn’t break. (1 more)

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Not stated

    Read the sentences of the record
    Fault
    Then, when I reached for the brakes again, it didn’t break. (1 more)
    Consequence
    The car is total damage air bags came out.

WHEELS1

  1. Manufacturer communication2006 GMC YUKON DENALI ・ 2024-05-01

    Tire Radial Force Variation (RFV) Service Bulletin

    1. 1Fault

      • The most common ride concern involving tire radial force variation is shake on smooth roads at highway speed, 105-115 km/h (65-70 mph).

    2. 2Finding the cause

      Possible causes

      • Tire related smooth road highway speed shake can be caused by three conditions: imbalance, out of round and tire force variation.

      Steps to confirm (in the document’s order)

      1. With the vehicle raised, center the wheels on the hub by loosening all wheel nuts and hand-tightening them while shaking the wheel, then torque to specification with a torque wrench, not a torque stick.
      2. If light brake application increases the pulsation felt in the steering wheel, go to the brake-induced pulsation diagnosis in the Brakes section of the service manual.
      3. A reading of 35 to 50 Hz typically indicates a first order propshaft vibration.
      4. Generally a reading between 10 and 20 Hz indicates a tire/wheel vibration.
      5. If vibration continues after 10 minutes of driving above 72 km/h (45 mph), temporary tire flat-spotting can be ruled out.
      2 more points

    3. 3Correction

      Repair

      • If the radial runout of a tire/wheel assembly is more than 0.040 in (1.02 mm), match mount the tire to the wheel to get below 0.040 in (1.02 mm).

      Caution

      • On the balancer always center the wheel by the pilot bore; never use the hub-cap bore, since it is not a precision machined surface.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and prior GM passenger cars and light duty trucks.
    • Condition：The most common ride concern involving tire radial force variation is shake on smooth roads at highway speed, 105-115 km/h (65-70 mph).
    • Cause：Tire related smooth road highway speed shake can be caused by three conditions: imbalance, out of round and tire force variation.
    • Confirm：With the vehicle raised, center the wheels on the hub by loosening all wheel nuts and hand-tightening them while shaking the wheel, then torque to specification with a torque wrench, not a torque stick.
    • Confirm：If light brake application increases the pulsation felt in the steering wheel, go to the brake-induced pulsation diagnosis in the Brakes section of the service manual.
    • Confirm：A reading of 35 to 50 Hz typically indicates a first order propshaft vibration.
    • Confirm：Generally a reading between 10 and 20 Hz indicates a tire/wheel vibration.
    • Confirm：If vibration continues after 10 minutes of driving above 72 km/h (45 mph), temporary tire flat-spotting can be ruled out.
    • Caution：On the balancer always center the wheel by the pilot bore; never use the hub-cap bore, since it is not a precision machined surface.
    • Confirm：Assembly radial force variation guide: P-Metric tires on light trucks, 24 lbs (11 kg) or less.
    • Confirm：Assembly radial force variation guide: LT-tires on light trucks, 35 lbs (16 kg) or less.
    • Repair：If the radial runout of a tire/wheel assembly is more than 0.040 in (1.02 mm), match mount the tire to the wheel to get below 0.040 in (1.02 mm).

    Open the manufacturer’s document (PDF) ↗ The points above were read from this document.

    Remedy
    This service bulletin provides information for dealers/technicians on Tire Radial Force Variation (RFV).

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