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GMC Yukon XL 2000–2006

GMC Yukon XLModel years 2000–2006

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The vehicle (where a record says)

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 faultWarning lightLoss of engine power, no accelerationSmoke or fireAir conditioning or heaterStalls or shuts offLeakDoes not start

Record by record

30 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

Work done

How it is said to have ended

  • says it held for a while1
  • says it did not fix it9
  • result not stated1

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 (20)

Known issuesSingle-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring2

  1. Manufacturer communication2000–2006 GMC YUKON XL ・ 2017-08-15

    Engine Misfire and Service Engine Soon Lamp Information

    1. 1Fault

      • With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder, which may or may not be felt.
      • The noise may be described as a chirp, squeak, squeal or tick and may increase off of idle.

    2. 2Finding the cause

      Possible causes

      • A worn cam lobe on this engine family generally makes a consistent chirp, squeak, squeal or tick at camshaft speed and/or a misfire with a P0300-P0308 DTC.

      Steps to confirm (in the document’s order)

      1. Press on the rocker arms with a wooden hammer handle while the noise is present; if pressing the valve side of a rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
      2. Measure cam lobe lift at the push rod side of the rocker arm; it will differ from the SI specification but should be similar to the other rockers on the same bank.
      3. A bore scope or pen light may help when inspecting the cam lobes through the lifter bores.
      4. A good sign of a sticking valve is that misfires keep counting during an aggressive deceleration with engine braking.
      5. The Cylinder Leakage Test in SI should typically isolate valve leakage by showing excessive leakage past an intake or exhaust valve compared with the others.
      1 more points

    3. 3Correction

      Repair

      1. If a worn cam lobe or lifter roller is found, replace the camshaft and all lifters per SI, plus the plastic lifter guide for the affected lifter (for the 2010 model year, all the plastic lifter guides).
      2. If force is needed to tap the valve off its seat, there is excessive carbon build up, which may be repaired by decarboning the engine.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 1999-2013 GMC Savana, Sierra and Yukon (with a V8 engine per the model list) (note: the Yukon years run later than the years this service covers).
    • Condition：With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder, which may or may not be felt.
    • Condition：The noise may be described as a chirp, squeak, squeal or tick and may increase off of idle.
    • Cause：A worn cam lobe on this engine family generally makes a consistent chirp, squeak, squeal or tick at camshaft speed and/or a misfire with a P0300-P0308 DTC.
    • Confirm：Press on the rocker arms with a wooden hammer handle while the noise is present; if pressing the valve side of a rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
    • Confirm：Measure cam lobe lift at the push rod side of the rocker arm; it will differ from the SI specification but should be similar to the other rockers on the same bank.
    • Confirm：A bore scope or pen light may help when inspecting the cam lobes through the lifter bores.
    • Repair：If a worn cam lobe or lifter roller is found, replace the camshaft and all lifters per SI, plus the plastic lifter guide for the affected lifter (for the 2010 model year, all the plastic lifter guides).
    • Confirm：A good sign of a sticking valve is that misfires keep counting during an aggressive deceleration with engine braking.
    • Repair：If force is needed to tap the valve off its seat, there is excessive carbon build up, which may be repaired by decarboning the engine.
    • Confirm：The Cylinder Leakage Test in SI should typically isolate valve leakage by showing excessive leakage past an intake or exhaust valve compared with the others.
    • Confirm：The two pieces of a broken valve spring can stay stacked together and be hard to see, so lightly push on different places on the springs with a small hammer handle.

    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 have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

  2. Manufacturer communication2000–2006 GMC YUKON XL ・ 2017-08-15

    Service Engine Soon Lamp and Engine Misfire Information

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

      What the documents say to do

      Single-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring

      Confirm

      • If pressing on the valve side of the rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.

      Repair

      1. If a worn camshaft lobe or lifter roller is found, follow SI procedures to replace the camshaft and all lifters.
      2. Also replace the plastic lifter guide for the lifter that had the damaged cam lobe and/or lifter roller.

      Caution

      • A damaged cam lobe is easy to overlook when inspecting through the lifter bores; unworn lifter rollers do not mean the cam lobes are okay.
    Read the sentences of the record

    Open the manufacturer’s document (PDF) ↗ What is shown here is NHTSA’s summary; the procedure is in the document itself.

    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find Diagnostic Trouble Codes P0300-P0308. If published Service Information diagnostics does not isolate the cause of this concern technician should check for a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, and a collapsed active fuel management lifter.

Known issuesIntermittent MIL, service lamps/messages or DTCs from connector fretting corrosion1

  1. Manufacturer communication2005–2006 GMC YUKON XL 2500 ・ 2010-03-06

    Intermittent MIL and Service Lamp Illumination

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Remedy
    GM/HUMMER/SAAB: INTERMITTENT ILLUMINATION OF MIL, SERVICE LAMPS, SERVICE MESSAGES, OR DTC SET BY VARIOUS CONTROL MODULES-DIAGNOSING AND REPAIRING FRETTING CORROSION (DISCONNECT AFFECTED CONNECTOR AND APPLY DIELECTRIC LUBRICANT). *PE UPDATED 3/26/10. *PE UPDATED 6/6/11. *PE UPDATED 3/12/12. *PE

Known issuesReduced Engine Power from throttle body connector crimp, broken wire or grounds1

  1. Owner complaint2003 GMC YUKON XL 1500 ・ 2015-09-28

    Check engine light and reduced power warning with complete loss of acceleration, braking and steering

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Fault
    WHILE TRAVELING TO WORK MY VEHICLES CHECK ENGINE LIGHT CAME ON AND THE REDUCED POWER WARNING CAME ON AT WHICH TIME I HAD COMPLETE LOSS OF ACCELERATION, COMPLETE LOSS OF BRAKING, AND COMPLETE LOSS OF STEERING POWER. (1 more)
    Remedy
    I HAVE ALREADY REPLACED THE THROTTLE HOUSING AND HARNESS COMPONENTS, ACCELERATION PEDAL SENSOR AND YET THE ISSUE CONTINUES, SOMEONE IS GOING TO ( DIE ) BECAUSE OF GMC'S LACK OF CONCERN AND RESPONSIBILITY TO OWNERS OF THEIR PRODUCTS.

ELECTRICAL SYSTEM14

  1. Owner complaint2003 GMC YUKON XL 1500 ・ 2016-06-16

    Reduced engine power warning light flashing randomly, speed reduced to less than 20 MPH

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Fault
    THE CONTACT MENTIONED THAT THE PREVIOUS OWNER OF THE VEHICLE EXPERIENCED A FAILURE WITH THE REDUCED ENGINE POWER WARNING INDICATOR. (1 more)
    Remedy
    THE DEALER REPLACED THE THROTTLE BODY, BUT THE FAILURE CONTINUED BEFORE THE CONTACT OWNED THE VEHICLE. (2 more)
    Outcome
    THE REPAIRS FAILED TO PROVIDE A PERMANENT SOLUTION AND THE WARNING LIGHT CONTINUED TO ILLUMINATE FOR THE REDUCED ENGINE POWER.

  2. Owner complaint2003 GMC YUKON XL ・ 2010-02-16

    Vehicle stalls while in motion and when braking

    1. 1Fault

    2. 2Finding the cause

      FIGURED OUT IT MAY BE RUNNING OUT OF GAS DUE TO THE GAUGE NOT WORKING.

    3. 3Correction

    Read the sentences of the record
    Fault
    VEHICLE STALLS WHILE IN MOTION. (1 more)
    Cause
    FIGURED OUT IT MAY BE RUNNING OUT OF GAS DUE TO THE GAUGE NOT WORKING.
    Remedy
    REPLACED THE FUEL FILTER TWICE. (1 more)

  3. Manufacturer communication2005–2006 GMC YUKON XL 2500 ・ 2024-05-16(5 earlier editions of this document folded here)

    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.

  4. Manufacturer communication2000–2006 GMC YUKON XL ・ 2021-07-06

    EVAP System Leak Diagnosis for MIL with DTCs P0442/P0455

    1. 1Fault

      • The MIL is illuminated and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) is set in the Engine Control Module (ECM).

    2. 2Finding the cause

      Possible causes

      • DTC P0455 sets for a large leak or a purge blockage; a large leak can come from an unseated tube connection, a damaged tube, a stuck open canister vent valve or a stuck closed purge valve.
      • DTC P0442 sets for a small leak, which can come from a stuck open purge valve or a stuck open canister vent valve.

      Steps to confirm (in the document’s order)

      1. Inspect all purge connections for proper installation and look for damage or wear along the lines; if damage is seen, confirm with the smoke test.
      2. Some leaks show only under pressure and some only under vacuum, so check both ways.
      3. Cycling the purge and vent solenoids with GDS2 while inspecting may indicate a sticking valve.
      4. Critical connections on the engine side: purge tube to purge valve at the intake manifold, purge tube to chassis EVAP line at the rear of the engine near the transmission, and chassis EVAP line to canister.
      5. Critical connections on the tank side: fuel tank load line to canister, vent valve line to vent valve, fuel tank load line jumper connection near the fuel tank, and the fuel tank cap being closed properly.
      2 more points

    3. 3Correction

      This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks, including medium duty, model years 2000 to 2021.
    • Applies to：The bulletin applies only to vehicles with gasoline engines.
    • Condition：The MIL is illuminated and DTC P0442 (EVAP small leak detected) and/or P0455 (EVAP large leak detected) is set in the Engine Control Module (ECM).
    • Cause：DTC P0455 sets for a large leak or a purge blockage; a large leak can come from an unseated tube connection, a damaged tube, a stuck open canister vent valve or a stuck closed purge valve.
    • Cause：DTC P0442 sets for a small leak, which can come from a stuck open purge valve or a stuck open canister vent valve.
    • Confirm：Inspect all purge connections for proper installation and look for damage or wear along the lines; if damage is seen, confirm with the smoke test.
    • Confirm：Some leaks show only under pressure and some only under vacuum, so check both ways.
    • Confirm：Cycling the purge and vent solenoids with GDS2 while inspecting may indicate a sticking valve.
    • Confirm：Critical connections on the engine side: purge tube to purge valve at the intake manifold, purge tube to chassis EVAP line at the rear of the engine near the transmission, and chassis EVAP line to canister.
    • Confirm：Critical connections on the tank side: fuel tank load line to canister, vent valve line to vent valve, fuel tank load line jumper connection near the fuel tank, and the fuel tank cap being closed properly.
    • Confirm：If all connections are good, check the vent valve for a stuck open position.
    • Confirm：If the vent valve is verified to be functioning correctly, go on to investigate the purge valve.

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

    Remedy
    This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.

  5. Manufacturer communication2006 GMC YUKON XL ・ 2019-04-08(3 earlier editions of this document folded here)

    Telematics Communication Interface Control Module DTC B101D Notice

    1. 1Fault

      • On inspection, DTC B101D is stored in the OnStar module with one or more related symptom codes.

    2. 2Finding the cause

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will use Global Diagnostic System 2 to review the Firmware Over-the-Air version. If the Firmware Over-the-Air version on the scan tool equals 6708 the technician will need to contact General Motors Technical Assistance Center for further assistance. If the Firmware Over-the-Air version on the scan tool is lower than 6708 Dealer can order the part thought the Instrument Sales and Service website process.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model table lists all brands and models, model years 2006 - 2018.
    • Condition：On inspection, DTC B101D is stored in the OnStar module with one or more related symptom codes.

    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 have a Diagnostic Trouble Code B101D stored in Telematics Communication Interface Control Module. Technician will use Global Diagnostic System 2 to review the Firmware Over-the-Air version. If the Firmware Over-the-Air version on the scan tool equals 6708 the technician will need to contact General Motors Technical Assistance Center for further assistance. If the Firmware Over-the-Air version on the scan tool is lower than 6708 Dealer can order the part thought the Instrument Sales and Service website process.

  6. Manufacturer communication2005–2006 GMC YUKON XL ・ 2018-06-04(1 earlier editions of this document folded here)

    IP to Body Harness Connector Repair for MIL and DTC P2138

    1. 1Fault

      • The engine warning lamp comes on intermittently with a message or indicator showing Reduced Engine Power.
      • DTC P2138 (Accelerator Pedal Position (APP) Sensor 1-2 Correlation) is set as current or in history.

    2. 2Finding the cause

      Possible causes

      • Water may have entered the instrument panel (IP) to body harness connector, which carries the APP sensor signals to the ECM/PCM.

      Steps to confirm (in the document’s order)

      1. Verify that no aftermarket equipment is electrically connected to the APP sensor signal or low reference circuits, or to any other ECM/PCM 5V reference or low reference circuit.
      2. Locate the IP to body harness connector, which may be in or around the left hand kick panel area or inside the IP.
      3. Inspect for a water leak in the area, using a water hose if necessary to find the source.
      4. Possible water leak points include the A-pillar seals, the sunroof drain lines (if equipped) and the windshield/cowl sealing.
      5. Inspect the terminals of the IP to body harness connector for corrosion and debris.

    3. 3Correction

      Repair

      1. If a water leak is found, repair it as necessary and verify that the repair is effective.
      2. If corrosion or debris is found on the connector terminals, repair as necessary.

      Caution

      • Aftermarket equipment can generate DTC P2138 and/or other DTCs.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2018 and prior GM passenger cars and light duty trucks.
    • Condition：The engine warning lamp comes on intermittently with a message or indicator showing Reduced Engine Power.
    • Condition：DTC P2138 (Accelerator Pedal Position (APP) Sensor 1-2 Correlation) is set as current or in history.
    • Cause：Water may have entered the instrument panel (IP) to body harness connector, which carries the APP sensor signals to the ECM/PCM.
    • Caution：Aftermarket equipment can generate DTC P2138 and/or other DTCs.
    • Confirm：Verify that no aftermarket equipment is electrically connected to the APP sensor signal or low reference circuits, or to any other ECM/PCM 5V reference or low reference circuit.
    • Confirm：Locate the IP to body harness connector, which may be in or around the left hand kick panel area or inside the IP.
    • Confirm：Inspect for a water leak in the area, using a water hose if necessary to find the source.
    • Confirm：Possible water leak points include the A-pillar seals, the sunroof drain lines (if equipped) and the windshield/cowl sealing.
    • Repair：If a water leak is found, repair it as necessary and verify that the repair is effective.
    • Confirm：Inspect the terminals of the IP to body harness connector for corrosion and debris.
    • Repair：If corrosion or debris is found on the connector terminals, repair as necessary.

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

    Remedy
    This technical bulletin provides repair information for repairing the IP to body harness connector to correct a customer concern for intermittent Malfunction Indicator Lamp (MIL) illuminated with Reduced Engine Power displayed and DTC P2138 set.

  7. Manufacturer communication2005 GMC YUKON XL ・ 2018-05-21

    Throttle Position Sensor Cover Replacement

    1. 1Fault

      • The malfunction indicator lamp (MIL) is illuminated with a Reduced Engine Power message displayed.
      • A scan tool may show DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History.

    2. 2Finding the cause

      Possible causes

      • The condition may be caused by the difference between TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than 2 seconds.

      Steps to confirm (in the document’s order)

      1. After installing the new cover, if the scan tool TP Sensor 1 and 2 Agree/Disagree parameter displays Disagree, replace the throttle body assembly.
      2. If DTC P1516, P2101 and/or P2176 are set, replace the throttle body.

    3. 3Correction

      Repair

      1. Clean the throttle body bore and throttle plate with a clean shop towel and GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N 993026), or ACDelco Upper Engine and Fuel Injector Cleaner, P/N 88861803, or an equivalent product.
      2. Remove the old TP sensor cover from the throttle body: grasp the cover, carefully lift it up and separate it from the throttle body.
      3. Tighten the throttle body fasteners to 89 lb in (= 10.1 N·m) (the text prints the metric value as "10 Y").
      4. Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB.
      5. Perform the Throttle Learn Reset Procedure.

      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.

      Parts

      • Part number 19259452, Throttle Position (TP) Sensor Cover, quantity 1.

      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

      • Do not replace the throttle body; follow the procedure in the bulletin instead.
      • If the throttle body is dropped at any time during the procedure, abort the procedure and replace it with a new throttle body assembly.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The Yukon entries are 2008-2011 GMC Canyon, Savana, Sierra, Sierra Denali and Yukon models (note: earlier Yukon model years are not listed).
    • Condition：The malfunction indicator lamp (MIL) is illuminated with a Reduced Engine Power message displayed.
    • Condition：A scan tool may show DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History.
    • Cause：The condition may be caused by the difference between TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than 2 seconds.
    • Caution：Do not replace the throttle body; follow the procedure in the bulletin instead.
    • Repair：Clean the throttle body bore and throttle plate with a clean shop towel and GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N 993026), or ACDelco Upper Engine and Fuel Injector Cleaner, P/N 88861803, or an equivalent product.
    • Repair：Remove the old TP sensor cover from the throttle body: grasp the cover, carefully lift it up and separate it from the throttle body.
    • Caution：If the throttle body is dropped at any time during the procedure, abort the procedure and replace it with a new throttle body assembly.
    • Confirm：After installing the new cover, if the scan tool TP Sensor 1 and 2 Agree/Disagree parameter displays Disagree, replace the throttle body assembly.
    • Confirm：If DTC P1516, P2101 and/or P2176 are set, replace the throttle body.
    • Repair：Tighten the throttle body fasteners to 89 lb in (= 10.1 N·m) (the text prints the metric value as "10 Y").
    • Repair：Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB.
    • Repair：Perform the Throttle Learn Reset Procedure.
    • Parts：Part number 19259452, Throttle Position (TP) Sensor Cover, quantity 1.

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

    Remedy
    This technical bulletin provides a procedure for replacing the throttle position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and DTC P2135 set.

  8. Manufacturer communication2003–2006 GMC YUKON XL ・ 2017-08-15(1 earlier editions of this document folded here)

    Vehicle Communication Interface Module LED and DTC B2455 Issue

    1. 1Fault

      • A red LED and DTC B2455 set current in the VCIM may be noticed after performing Canada upgrade bulletin 15-08-44-001.
      • When placing calls or connecting to OnStar, the person on the other end can hear the caller clearly.

    2. 2Finding the cause

      Possible causes

      • A short between the audio drain wire and the microphone drain wire has been found to cause this concern.

      Steps to confirm (in the document’s order)

      • Pull back the tape at X2 of the VCIM far enough to see where the bare wires are covered.

    3. 3Correction

      Repair

      1. Tape the bare wires individually to prevent them from shorting, then tape the harness back up.
      2. The warranty labor operation is 602058, Onstar Upgrade Wire Repair.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list includes 2003-2006 GMC Yukon/Yukon XL.
    • Condition：A red LED and DTC B2455 set current in the VCIM may be noticed after performing Canada upgrade bulletin 15-08-44-001.
    • Condition：When placing calls or connecting to OnStar, the person on the other end can hear the caller clearly.
    • Cause：A short between the audio drain wire and the microphone drain wire has been found to cause this concern.
    • Confirm：Pull back the tape at X2 of the VCIM far enough to see where the bare wires are covered.
    • Repair：Tape the bare wires individually to prevent them from shorting, then tape the harness back up.
    • Repair：The warranty labor operation is 602058, Onstar Upgrade Wire Repair.

    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 has a red LED and DTC B2455 setting current in the Vehicle Communication Interface Module after performing Canada upgrade. Technician will need to gain access to the Vehicle Communication Interface Module. After gaining access to the Vehicle Communication Interface Module pull the tape back on the X2 connector then tape the bare wires individually to prevent them from shorting.

  9. Manufacturer communication2000–2006 GMC YUKON XL ・ 2017-08-15

    OnStar Communication Interface Module Power Issue

    1. 1Fault

      • Some Gen 6 OnStar vehicles have a no power/no connect concern; the LED may or may not be lit red and a current DTC U1500 may be present.
      • The message "PHONE UNAVAILABLE" may keep repeating without any user input.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • OnStar Engineering found that Gen6 VCIMs with STID in the ranges 14,000,000 - 16,000,000 and/or 22,000,000 - 23,200,000 may induce this concern and need to be replaced.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2000-2006 GM passenger cars and trucks with OnStar Gen6.
    • Condition：Some Gen 6 OnStar vehicles have a no power/no connect concern; the LED may or may not be lit red and a current DTC U1500 may be present.
    • Condition：The message "PHONE UNAVAILABLE" may keep repeating without any user input.
    • Repair：OnStar Engineering found that Gen6 VCIMs with STID in the ranges 14,000,000 - 16,000,000 and/or 22,000,000 - 23,200,000 may induce this concern and need to be replaced.

    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 may have a no power or no connect concern. Technician will find that the OnStar led is red and Diagnostic Trouble Code U1500 is set. Technician will need to replace the Vehicle Communication Interface Module if the Station Identification number falls in the ranges 14,000,000 - 16,000,000 or 22,000,000 - 23,200,000.

  10. Manufacturer communication2000–2006 GMC YUKON XL ・ 2017-08-15

    Diagnostic Trouble Code B101D-37 History Information

    1. 1Fault

      • History DTC B101D-37 may be found in the OnStar VCIM; it only displays in history on the scan tool and does not cause issues with OnStar operation.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation.

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2011-2017 GM passenger cars and light duty trucks with OnStar (RPO UE1), and 2000 - 2015 Canada GM passenger cars and trucks with the Canada Upgrade.
    • Condition：History DTC B101D-37 may be found in the OnStar VCIM; it only displays in history on the scan tool and does not cause issues with OnStar operation.

    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 have a Diagnostic Trouble Code B101D-37 history in the Vehicle Communication Interface Module or telematics communication interface control module. Engineering has determined that this code will only display in history on the scan tool and will not cause issues with OnStar system operation.

  11. Owner complaint2005 GMC YUKON DENALI XL ・ 2015-08-31

    Speedometer erratic reading and cruise control malfunction on highway

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Fault
    WHILE DRIVING ON THE HIGHWAY WITH MY CRUISE CONTROL SET BETWEEN 50-70MPH (= 80.5–112.7 km/h), I BEGAN NOTICING MY SPEEDOMETER BEGINNING TO JUMP BETWEEN 0-120MPH (= 0–193.1 km/h) CAUSING THE LIMITER TO KICK IN AND ME LOSING THE ABILITY TO CONTROL SPEED. (4 more)
    Cause
    SOME HAD SIMILAR ISSUES AND SAID THE IGNITION COILS MAY BE BAD.
    Inspection
    I WAS TOLD THAT I HAD A BAD MASS AIR FLOW SENSOR. (1 more)

  12. Manufacturer communication2002–2006 GMC YUKON XL DENALI ・ 2008-12-12

    Seat Position Sensor Circuits Notification

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      GMC: SIR MIL DTC B0084 AND/OR B0085. THIS CONCERN COULD BE CAUSED BY BROKEN SEAT POSITION SENSOR CIRCUITS UNDER THE DRIVER OR PASSENGER FRONT SEATS. OVER TIME, FROM REPEATED SEAT MOVEMENT, THE WIRING COULD BREAK. *PE

    Read the sentences of the record
    Remedy
    GMC: SIR MIL DTC B0084 AND/OR B0085. THIS CONCERN COULD BE CAUSED BY BROKEN SEAT POSITION SENSOR CIRCUITS UNDER THE DRIVER OR PASSENGER FRONT SEATS. OVER TIME, FROM REPEATED SEAT MOVEMENT, THE WIRING COULD BREAK. *PE

  13. Manufacturer communication2003–2006 GMC YUKON XL DENALI ・ 2007-08-15

    Additional Diagnostic for Yaw/Lat Sensor DTCs

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      ADDITIONAL DIAGNOSTIC FOR YAW/LAT SENSOR DTC'S. *KB

    Read the sentences of the record
    Remedy
    ADDITIONAL DIAGNOSTIC FOR YAW/LAT SENSOR DTC'S. *KB

  14. Owner complaint2003 GMC YUKON XL 1500 ・ 2006-09-06

    Engine sluggish with reduced power message, then stall while driving

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Not stated

    Read the sentences of the record
    Fault
    I PULLED OUT OF MY DRIVEWAY IN MY 2003 GMC YUKON XL AND ONLY WENT A SHORT DISTANCE WHEN I NOTICED THE ENGINE WAS VERY SLUGGISH AND THE DIC SHOWED "REDUCED ENGINE POWER". (1 more)
    Inspection
    THE MECHANIC THAT TOWED IT READ THE DTC'S AND FOUND THE FOLLOWING: -CLASS 2 DATA LINK MALFUNCTION. - BODY CONTROL MODULE. - PCM TO TAC MODULE SERIAL DATA CONNECTION.
    Consequence
    I LOST ALL ABILITY TO MANEUVER THE VEHICLE.

AIR BAGS1

  1. Manufacturer communication2003–2006 GMC YUKON XL 2500 ・ 2017-08-25

    Electronic Accessory Control System – Coil Harness Centering Service Communication

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Repair

      • Return all parts with a calendar date from July 29, 2015 to Oct 07, 2016 (Julian date from 15210 to 16280).
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Dorman Products, Inc. is inspecting the NAPA Airbag Clock Spring p/n 665-3499.
    • Repair：Return all parts with a calendar date from July 29, 2015 to Oct 07, 2016 (Julian date from 15210 to 16280).

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

    Remedy
    All applicable vehicle applications are without Electronic Accessory Control System option. This communication is to return unsold inventory because some product sold in 2016 may not have coil harness wound in a centered condition as an assembly aid. If installer does not center the rotations of the assembly during replacement process in accordance with applicable AllData service and repair procedure, post-install turning of the steering wheel will trigger the air bag warning light of the vehicle.

ELECTRICAL1

  1. Recall2000–2001 GMC YUKON XL ・ 2005-04-15

    Fuel Module Reservoir Assembly Overheating Recall

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      Not stated

    Read the sentences of the record
    Cause
    Certain vehicles were built with fuel module reservoir assemblies that contain fuel pump wires and/or connectors that may overheat under certain operating conditions. Fuel pump wires that overheat may become exposed and result in one or more conditions; 1) If the ignition circuit wire is exposed and shorts to ground, the fuel pump fuse will blow, disabling the fuel pump and causing an engine stall or no-start condition. 2) If sufficient heat is conducted to the pass-through connector, a hole in the connector may result, which may cause the Service Engine Soon light to be illuminated during the emission system diagnostics routine. Fuel vapour (and in some limited cases liquid fuel) may leak out of the fuel tank through the hole in the connector body. 3) If the ignition circuit or ground wire is exposed and shorts to the fuel level sender card wires, inaccurate fuel level readings may result. Correction: Dealers will affect repairs.

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