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GMC Yukon 2000–2006

GMC YukonModel 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:NoiseWarning lightCorrosion or rustLeakMisfire or rough idleAir conditioning or heaterReduced brakingLights (headlights, turn signals)

Record by record

97 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 came back2

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 (21)

Known issuesSingle-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring3

  1. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2023-05-06(3 earlier editions of this document folded here)

    Diagnostic tip: valve, lifter or camshaft issue

    1. 1Fault

      • Misfire, chirp, squeak, squeal or tick noise, or MIL illuminated.
      • DTCs P0300 (engine misfire detected) and P0301 through P0308 (misfire detected on cylinders 1 through 8) are listed.

    2. 2Finding the cause

      Possible causes

      • Possible causes: worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM lifter.

      Steps to confirm (in the document’s order)

      1. A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
      2. If applying pressure to the valve side of the rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
      3. Disconnect the coils and injectors on one bank, run the engine with that valve cover removed, back off the rocker arm a couple of turns and listen for a change in the noise.
      4. Measure cam lobe lift at the pushrod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift.
      5. A good indicator of a sticking valve is misfires that keep counting on an aggressive deceleration with engine braking.
      1 more points

    3. 3Correction

      Repair

      • If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters, and the plastic lifter guide for the affected lifter.

      Caution

      • A damaged cam lobe is easy to overlook through the lifter bores, and unworn lifter rollers do not mean the cam lobes are okay; inspect both carefully.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks, 2002 through 2023, with V6/V8 pushrod engines.
    • Condition：Misfire, chirp, squeak, squeal or tick noise, or MIL illuminated.
    • Condition：DTCs P0300 (engine misfire detected) and P0301 through P0308 (misfire detected on cylinders 1 through 8) are listed.
    • Confirm：A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
    • Cause：Possible causes: worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM lifter.
    • Confirm：If applying pressure to the valve side of the rocker changes the noise, a lifter and/or cam lobe concern on that cylinder is most likely.
    • Confirm：Disconnect the coils and injectors on one bank, run the engine with that valve cover removed, back off the rocker arm a couple of turns and listen for a change in the noise.
    • Confirm：Measure cam lobe lift at the pushrod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift.
    • Caution：A damaged cam lobe is easy to overlook through the lifter bores, and unworn lifter rollers do not mean the cam lobes are okay; inspect both carefully.
    • Repair：If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters, and the plastic lifter guide for the affected lifter.
    • Confirm：A good indicator of a sticking valve is misfires that keep counting on an aggressive deceleration with engine braking.
    • Confirm：A broken valve spring may stay stacked together and be hard to see; 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 diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.

  2. Manufacturer communication2002–2006 GMC YUKON DENALI ・ 2018-11-13(4 earlier editions of this document folded here)

    Service Engine Soon Lamp, Misfire, Engine Noise Diagnostic Information

    1. 1Fault

      • Customers may complain of an SES light, engine misfire, and/or engine noise.
      • If the SES light is on, there will be a P0300-P0308 DTC with misfires counting on a single cylinder, which may or may not be felt.
      • A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).

    2. 2Finding the cause

      Possible causes

      • If SI diagnosis does not isolate the cause, it may be a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM (Active Fuel Management) lifter.

      Steps to confirm (in the document’s order)

      1. During the noise, press with a wooden hammer handle on the rocker arms at the valve side, push rod side, and side of the rocker to find which one is making noise.
      2. If pressure on the valve side of the rocker changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
      3. Measure the cam lobe lift at the push rod side of the rocker arm.
      4. A good indicator of a sticking valve is engine misfires that continue to count on an aggressive deceleration with engine braking.
      5. Release the air pressure from the cylinder and work the valve up and down in the guide while turning it 360 degrees; if any binding is felt, a stem to guide clearance concern exists.
      1 more points

    3. 3Correction

      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.
      3. Refer to the latest version of PIP4753 for decarboning instructions.
      4. If a broken valve spring is found, replace the broken valve spring as necessary.

      Caution

      • If an AFM lifter concern is suspected, refer to the latest version of PIP4568 for additional information.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GMC Yukon models, 2002 - 2018, with a V8 engine.
    • Condition：Customers may complain of an SES light, engine misfire, and/or engine noise.
    • Condition：If the SES light is on, there will be a P0300-P0308 DTC with misfires counting on a single cylinder, which may or may not be felt.
    • Condition：A verified noise is not eliminated by canceling fuel injectors and occurs at camshaft speed (half of crankshaft speed).
    • Cause：If SI diagnosis does not isolate the cause, it may be a worn camshaft lobe and/or lifter roller, a sticking valve, valve leakage, a broken valve spring, or a collapsed AFM (Active Fuel Management) lifter.
    • Confirm：During the noise, press with a wooden hammer handle on the rocker arms at the valve side, push rod side, and side of the rocker to find which one is making noise.
    • Confirm：If pressure on the valve side of the rocker changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
    • Confirm：Measure the cam lobe lift at the push rod side of the rocker arm.
    • Repair：If a worn camshaft lobe or lifter roller is found, follow SI procedures to replace the camshaft and all lifters.
    • Repair：Also replace the plastic lifter guide for the lifter that had the damaged cam lobe and/or lifter roller.
    • Confirm：A good indicator of a sticking valve is engine misfires that continue to count on an aggressive deceleration with engine braking.
    • Confirm：Release the air pressure from the cylinder and work the valve up and down in the guide while turning it 360 degrees; if any binding is felt, a stem to guide clearance concern exists.
    • Repair：Refer to the latest version of PIP4753 for decarboning instructions.
    • Confirm：Typically, the Cylinder Leakage Test outlined in SI should isolate valve leakage.
    • Repair：If a broken valve spring is found, replace the broken valve spring as necessary.
    • Caution：If an AFM lifter concern is suspected, refer to the latest version of PIP4568 for additional information.

    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.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 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 issues4L80-E / 4L85-E planetary gear whine in first and second gear1

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

    Planetary Gear Whine Noise in First and Second Gear

    1. 1Fault

      • The 4L80E/4L85E automatic transmission may have a planetary gear whine noise in first and second gear, typically louder in first gear than in second.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. If the noise is judged abnormal and the transmission was built after 9-01-03, perform the Rear Unit End Play Check (SI Document ID # 52027).
      2. The correct end play is between 0.127-0.508 mm (0.005-0.020 in).

    3. 3Correction

      Repair

      1. If end play is out of specification, inspect and replace the output planetary gear set (661 - Output Carrier Assembly and 650 - Sun Gear) as necessary.
      2. Set the rear end play with the correct selective thrust washer (674), targeting between .010 and .015 in.
      3. If end play is within specification, replace the transmission assembly, referring to bulletin 02-07-30-029A before ordering it.

      Caution

      • This planetary gear whine can be characteristic of the 4L80E/4L85E; compare the vehicle with an identically built vehicle (same GVWR) before attempting any repairs.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 1999-2007 GMC Sierra and Yukon XL (among other listed GM trucks and vans) with the 4L80E (RPO MT1) or 4L85E (RPO MN8) transmission (note: the Yukon XL range runs to 2007).
    • Condition：The 4L80E/4L85E automatic transmission may have a planetary gear whine noise in first and second gear, typically louder in first gear than in second.
    • Caution：This planetary gear whine can be characteristic of the 4L80E/4L85E; compare the vehicle with an identically built vehicle (same GVWR) before attempting any repairs.
    • Confirm：If the noise is judged abnormal and the transmission was built after 9-01-03, perform the Rear Unit End Play Check (SI Document ID # 52027).
    • Confirm：The correct end play is between 0.127-0.508 mm (0.005-0.020 in).
    • Repair：If end play is out of specification, inspect and replace the output planetary gear set (661 - Output Carrier Assembly and 650 - Sun Gear) as necessary.
    • Repair：Set the rear end play with the correct selective thrust washer (674), targeting between .010 and .015 in.
    • Repair：If end play is within specification, replace the transmission assembly, referring to bulletin 02-07-30-029A before ordering it.

    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 may have a planetary gear whine noise in first and second gear. Technician should compare the noise to a like vehicle. Technician will need to check the build date of the transmission, if it was built after 09/01/2003 and it is determined that a vehicle has an abnormal amount of noise, perform the rear unit end play check. Technician will replace the output planetary gear set if end play is out of specification. The transmission assembly will need to be replaced if the end play is with in specification.

Known issuesExhaust pop or ping noise (replace the heat shield, not the exhaust system)1

  1. Manufacturer communication2002–2005 GMC YUKON ・ 2005-12-01(also printed in 3 other issues)

    Exhaust pop or ping noise: replace the heat shield

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • Replace the heat shield.

      Caution

      • Do not replace the exhaust system. The reference bulletin is 03-06-05-008B.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2002-2005 Tahoe, Suburban, All Yukons, All Escalades, Avalanche, H2: an exhaust pop or ping noise.
    • Repair：Replace the heat shield.
    • Caution：Do not replace the exhaust system. The reference bulletin is 03-06-05-008B.

    Open this issue of GM TechLink ↗ The points above are read from an article of TechLink, GM’s monthly publication for dealership technicians. The article itself is not reproduced here.

    Remedy
    Truck Issues — Fix It Right the First Time (new issues in bold) 2002-2005 Tahoe, Suburban, All Yukons, All Escalades, Avalanche, H2 – Exhaust Pop/Ping Noise Replace heat shield. Don’t replace exhaust system. 03-06-05-008B

Known issuesAftermarket part (not the vehicle as built): Federal-Mogul National / Carquest replacement wheel hub assembly retention nut - recall 07E-1061

  1. Recall2002 GMC YUKON ・ —

    Wheel Hub Assembly Bearing Nut Loosening Recall

    1. 1Fault

      • The inboard retention nut that maintains the hub bearing assembly can loosen, resulting in an ABS light indication, noise, and/or wheel separation from the vehicle; wheel separation can result in a vehicle crash.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. On 2x4 vehicles, raise the vehicle on an approved hoist first; the hub assembly is good if a yellow, green or blue paint mark is seen on the grease cap on the inboard side of the steering knuckle.
      2. If the paint mark is not present, remove the wheel and the brake rotor and clean rust from the hub assembly face to check for the date code stamping.
      3. Defective hub assemblies can be identified by the country of origin on the package together with a recalled date code, by the date code on the package, or by the date code on the hub assembly.
      4. If a round yellow sticker is present on the box label, the part is good.

    3. 3Correction

      Repair

      1. The hub assemblies were manufactured for aftermarket use; owners of these parts should have them removed and replaced as soon as possible.
      2. Federal-Mogul will replace the recalled hub assemblies free of charge.

      Parts

      • The recalled part numbers are 515020, 515021, 515025, 515053, 515054, 515059 and 515060.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：This is an equipment recall by Federal-Mogul of certain wheel hub assemblies sold as replacement parts only.
    • Applies to：The recalled hub assemblies were packaged and sold between January 23, 2006 and December 20, 2007 under the National and CARQUEST Premium (BGS/Blue) brands, in 7 base part numbers.
    • Parts：The recalled part numbers are 515020, 515021, 515025, 515053, 515054, 515059 and 515060.
    • Applies to：The application lists include GMC 1500 Yukon (2WD) and GMC 1500 Yukon XL (2WD), 2001-2006.
    • Applies to：ILJIN manufactured the recalled hub assemblies from December 27, 2005 to November 29, 2007.
    • Condition：The inboard retention nut that maintains the hub bearing assembly can loosen, resulting in an ABS light indication, noise, and/or wheel separation from the vehicle; wheel separation can result in a vehicle crash.
    • Confirm：On 2x4 vehicles, raise the vehicle on an approved hoist first; the hub assembly is good if a yellow, green or blue paint mark is seen on the grease cap on the inboard side of the steering knuckle.
    • Confirm：If the paint mark is not present, remove the wheel and the brake rotor and clean rust from the hub assembly face to check for the date code stamping.
    • Confirm：Defective hub assemblies can be identified by the country of origin on the package together with a recalled date code, by the date code on the package, or by the date code on the hub assembly.
    • Confirm：If a round yellow sticker is present on the box label, the part is good.
    • Repair：The hub assemblies were manufactured for aftermarket use; owners of these parts should have them removed and replaced as soon as possible.
    • Repair：Federal-Mogul will replace the recalled hub assemblies free of charge.
    Cause
    CERTAIN FEDERAL-MOGUL REPLACEMENT WHEEL HUB ASSEMBLIES WITH THE BRAND NAMES: NATIONAL, CARQUEST P/NOS. 515020, 515021, 515025, 515053, 515054, 515059, AND 515060, SHIPPED BETWEEN JANUARY 23, 2006, AND DECEMBER 20, 2007, SOLD FOR LIGHT DUTY AND MEDIUM DUTY TRUCKS. THE INBOARD RETENTION NUT USED TO MAINTAIN HUB BEARING ASSEMBLY CAN LOOSEN RESULTING IN AN ABS LIGHT INDICATION, NOISE, AND/OR WHEEL SEPARATION.
    Remedy
    FEDERAL-MOGUL WILL NOTIFY CUSTOMERS AND WILL REPLACE THE HUB ASSEMBLY FREE OF CHARGE. THE RECALL BEGAN ON FEBRUARY 7, 2008. OWNERS CAN CONTACT FEDERAL-MOGUL TOLL-FREE AT 877-489-6659.
    Consequence
    WHEEL SEPARATION CAN RESULT IN A VEHICLE CRASH.

Known issuesAftermarket part (not the vehicle as built): Fram G3727 replacement fuel filter connector - recall 06E-0431

  1. Recall2002 GMC YUKON ・ —

    Fram Replacement Fuel Filters (P/N G3727) Recall

    1. 1Fault

      • The connector on the fuel filter was not manufactured to specification, so the O-ring may not seat correctly on the fuel line; this may cause an inadequate seal, potentially leading to a fuel leak (wetting or dripping) and possible vehicle fire.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • The part number (G3727), country of origin (Mexico) and the date code (e.g., X60031) are located on the side of the fuel filter.

    3. 3Correction

      Repair

      • Honeywell will replace the subject fuel filters at no charge to the customer.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：This is an equipment recall of fuel filters manufactured by Interfil in Mexico and sold by Honeywell under the FRAM brand name, part number G3727, intended for aftermarket installation on the vehicle applications in the attached table.
    • Applies to：Only filters with date codes X52911 through X60801 sequentially or X600141, and with a Mexico country of origin marking on the filter housing, are subject to the recall.
    • Applies to：The application table lists YUKON 1992 - 2005, YUKON DENALI 2005, YUKON DENALI XL 2005, YUKON XL 1500 2000 - 2005 and YUKON XL 2500 2000 - 2005.
    • Condition：The connector on the fuel filter was not manufactured to specification, so the O-ring may not seat correctly on the fuel line; this may cause an inadequate seal, potentially leading to a fuel leak (wetting or dripping) and possible vehicle fire.
    • Confirm：The part number (G3727), country of origin (Mexico) and the date code (e.g., X60031) are located on the side of the fuel filter.
    • Repair：Honeywell will replace the subject fuel filters at no charge to the customer.
    Cause
    CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.
    Remedy
    HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION 1).
    Consequence
    THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.

Known issuesFuel pressure regulator buzz / hum after replacement (check fuel pump feed voltage drop and connector crimps)1

  1. Manufacturer communication2000–2003 GMC YUKON DENALI ・ 2017-08-15

    Buzz Noise at Idle After Fuel Pressure Regulator Replacement

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    This Preliminary Information communication provides information to the technician about vehicles that may have a buzz noise at idle after fuel pressure regulator replacement. Technician will need to gain access to the fuel pump. After gaining access to the fuel pump check the power and ground for voltage drop with the key in the off from the fuel pump to the battery post. Technician should also check the pin fit and terminal drag. Technician may replace the fuel pump connector with the updated part using the latest version service bulletin 04-06-04-088C. Technician should inspect voltage drop points at the UBEC, fuel pump relay, ground at the frame and the battery cable grounds. If excessive resistance is found at the crimps, replace the crimp n seal splice sleeves for the affected circuits. If the circuits do not have high resistance replace the regulator using part number 19236428.

Known issuesGrind / ratchet noise when shifting into Park in 4LO (characteristic)1

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-08-20

    Light Duty Trucks: Grinding Noise in Park with 4WD Low

    1. 1Fault

      • Light duty trucks with automatic transmission and 4 wheel drive may make a grinding/ratcheting noise when the transmission is shifted into park while the transfer case is in 4 wheel drive low (4LO) range.
      • The grind/ratchet noise lasts approximately one second.

    2. 2Finding the cause

      Possible causes

      • When the transmission is shifted from drive or reverse into park with the transfer case in 4LO, the driveline unloads and turns the propeller shaft approximately 1/8 of a turn.
      • The gear reduction in the transfer case makes the transmission output shaft turn faster than the parking pawl will hold, so the parking pawl grinds/ratchets until the output shaft stops.

    3. 3Correction

      Caution

      • This should be considered characteristic of 4 wheel drive vehicles operated in 4LO.
      • Replacing transmission, transfer case and/or driveline components will not resolve the concern; shifting into park with the transfer case in the 4HI or 2HI range is recommended.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list names GMC Yukon models, 1999 - 2019.
    • Condition：Light duty trucks with automatic transmission and 4 wheel drive may make a grinding/ratcheting noise when the transmission is shifted into park while the transfer case is in 4 wheel drive low (4LO) range.
    • Cause：When the transmission is shifted from drive or reverse into park with the transfer case in 4LO, the driveline unloads and turns the propeller shaft approximately 1/8 of a turn.
    • Cause：The gear reduction in the transfer case makes the transmission output shaft turn faster than the parking pawl will hold, so the parking pawl grinds/ratchets until the output shaft stops.
    • Condition：The grind/ratchet noise lasts approximately one second.
    • Caution：This should be considered characteristic of 4 wheel drive vehicles operated in 4LO.
    • Caution：Replacing transmission, transfer case and/or driveline components will not resolve the concern; shifting into park with the transfer case in the 4HI or 2HI range is recommended.

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

    Remedy
    This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low (4LO) range. Dealers technician's are advised this condition should be deemed a normal characteristic of 4WD low operation.

Known issuesSteering intermediate shaft clunk1

  1. Manufacturer communication2000–2006 GMC YUKON ・ 2008-07-14

    Upper Intermediate Steering Shaft Clunking Noise

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN STEERING WHEEL AND/OR STEERING COLUMN (REPLACE UPPER INTERMEDIATE STEERING SHAFT [I-SHAFT] ASSEMBLY). *PE

POWER TRAIN4

  1. Manufacturer communication2000–2006 GMC YUKON ・ 2022-10-17(2 earlier editions of this document folded here)

    Torque Converter Bolt Removal Warning

    1. 1Fault

      • Noise from underneath a vehicle equipped with an automatic transmission.

    2. 2Finding the cause

      Possible causes

      • Running the engine with those bolts removed may damage the pilot on the front of the torque converter, the pilot hole in the end of the crankshaft, or both.

      Steps to confirm (in the document’s order)

      • Use chassis ears to isolate the component or assembly that is the loudest source of the noise.

    3. 3Correction

      Caution

      • Do not remove the flex plate to torque converter bolts, push the converter back toward the transmission and start the engine to tell whether the noise is from the engine or the transmission.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：All brands and models, model years 2000 - 2021.
    • Condition：Noise from underneath a vehicle equipped with an automatic transmission.
    • Caution：Do not remove the flex plate to torque converter bolts, push the converter back toward the transmission and start the engine to tell whether the noise is from the engine or the transmission.
    • Cause：Running the engine with those bolts removed may damage the pilot on the front of the torque converter, the pilot hole in the end of the crankshaft, or both.
    • Confirm：Use chassis ears to isolate the component or assembly that is the loudest source of the noise.

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

    Remedy
    This Preliminary Information communication provides information to the technician to not remove the torque converter bolts and start the engine as this may cause damage to the torque converter of the crankshaft on vehicles equipped with an automatic transmission.

  2. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2022-09-19

    Flexplate and Torque Converter Separation Warning

    1. 1Fault

      • A noise comes from underneath a vehicle equipped with an automatic transmission.
      • The technician may find that the noise comes from the bell housing area.

    2. 2Finding the cause

      Possible causes

      • Running the engine with those bolts removed may damage the pilot on the front of the torque converter, the pilot hole in the end of the crankshaft, or both.

      Steps to confirm (in the document’s order)

      • Use chassis ears to isolate the component or assembly that is the loudest source of the noise.

    3. 3Correction

      Caution

      • Do not separate the torque converter from the flex plate.
      • Do not remove the flex plate to torque converter bolts, push the converter back and start the engine to tell whether the noise is from the engine or the transmission.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to GM passenger cars and trucks, model years 2000 to 2023.
    • Condition：A noise comes from underneath a vehicle equipped with an automatic transmission.
    • Condition：The technician may find that the noise comes from the bell housing area.
    • Caution：Do not separate the torque converter from the flex plate.
    • Caution：Do not remove the flex plate to torque converter bolts, push the converter back and start the engine to tell whether the noise is from the engine or the transmission.
    • Cause：Running the engine with those bolts removed may damage the pilot on the front of the torque converter, the pilot hole in the end of the crankshaft, or both.
    • Confirm：Use chassis ears to isolate the component or assembly that is the loudest source of the noise.

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

    Remedy
    This diagnostic tip advises the tech not to separate the flexplate from the torque convertor or damage my occur if the engine is started while diagnosing for noise from the engine or transmission.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2008-04-07

    Eaton Locking Differential Chatter Shudder Noise on Turns (RPO G80)

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      EATON LOCKING DIFFERENTIAL CHATTER SHUDDER NOISE ON TURNS, EQUIPPED WITH A LOCKING REAR DIFFERENTIAL RPO G80. *NJ UPDATED 7/17/2008. *PE

    Read the sentences of the record
    Remedy
    EATON LOCKING DIFFERENTIAL CHATTER SHUDDER NOISE ON TURNS, EQUIPPED WITH A LOCKING REAR DIFFERENTIAL RPO G80. *NJ UPDATED 7/17/2008. *PE

  4. Owner complaint2002 GMC YUKON ・ 2006-03-30

    Rear driveline differential broke and separated during turning

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

      THE VEHICLE IS CURRENTLY AT THE DEALERSHIP AWAITING REPAIRS.

    Read the sentences of the record
    Fault
    DT*: THE CONTACT STATED WHILE ATTEMPTING TO TURN AT 15 MPH (= 24.1 km/h), THE REAR DRIVELINE DIFFERENTIAL BROKE FOLLOWED BY A BANGING NOISE AS THOUGH IT WAS DRAGGING.
    Remedy
    THE VEHICLE IS CURRENTLY AT THE DEALERSHIP AWAITING REPAIRS.

ENGINE AND ENGINE COOLING3

  1. Owner complaint2002 GMC YUKON DENALI ・ 2003-06-11

    Intermittent noise from right rear of vehicle; returned after exhaust system change

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Fault
    CONSUMER NOTICED A NOISE COMING FROM RIGHT REAR OF VEHICLE INTERMITTENTLY.
    Remedy
    DEALER WAS CONTACTED, AND CHANGED THE EXHAUST SYSTEM.
    Outcome
    NOISE STOPPED FOR A WHILE, BUT RETURNED. *AK

  2. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2018-06-04

    Engine Squealing Type Noise on Start-up or Vibration

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • Inspect the crankshaft balancer for an outer ring slipping on the center hub; if found, replace the crankshaft balancer.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to the listed models equipped with the 3.5L or 3.9L engine (RPOs LZ4, LZE, LZ8, LGD, LZ9, LZG, LX9).
    • Repair：Inspect the crankshaft balancer for an outer ring slipping on the center hub; if found, replace the crankshaft balancer.

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

    Remedy
    This informational bulletin provides information for Engine Squealing Type Noise on Start-up or Vibration Condition.

  3. Manufacturer communication2000–2006 GMC YUKON ・ 2011-06-08

    Service Engine Soon Light On With Misfire or Engine Noise

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      GM: THE SERVICE ENGINE SOON LIGHT IS ON, THERE IS ALSO A MISFIRE OR ENGINE NOISE. THERE ARE MULTIPLE POSSIBLE CAUSES. *RM

    Read the sentences of the record
    Remedy
    GM: THE SERVICE ENGINE SOON LIGHT IS ON, THERE IS ALSO A MISFIRE OR ENGINE NOISE. THERE ARE MULTIPLE POSSIBLE CAUSES. *RM

EQUIPMENT3

  1. Manufacturer communication2000–2006 GMC YUKON ・ 2023-08-21(2 earlier editions of this document folded here)

    Unusual Noise Diagnosis - Preliminary Information

    1. 1Fault

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • For an unusual noise that is hard to identify or pinpoint, record a sound or video file of the noise before disassembly and before calling Technical Assistance.

    3. 3Correction

      This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.Â

    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2000-2024 vehicles of all brands and models.
    • Confirm：For an unusual noise that is hard to identify or pinpoint, record a sound or video file of the noise before disassembly and before calling Technical Assistance.

    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 an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.Â

  2. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2018-04-02

    Technical Bulletin Revision for 2013-2014 Model Years

    1. 1Fault

      • On automatic transmission vehicles, a clunk noise when shifting between Park and Drive, Park and Reverse, or Drive and Reverse.
      • A clunk noise while driving when the accelerator is quickly depressed and then released.

    2. 2Finding the cause

      Possible causes

      • Gear clearance or freeplay (lash) can produce a clunk whenever a gear is loaded and unloaded quickly or the direction of rotation is reversed.
      • In a 4-wheel drive vehicle the transfer case gears and their clearances add freeplay on top of that from the rear axle gears, universal joints and transmission.

      Steps to confirm (in the document’s order)

      • Compare the complaint vehicle with a like vehicle; if the results are the same, it is a normal condition.

    3. 3Correction

      Caution

      • Because every driveline component has some lash by design, changing driveline components may not reduce the lash satisfactorily.
      • The clunk noise does not adversely affect durability or performance.
      • Do not confuse this with the clunk at stop or from launch that is handled by cleaning/lubricating the rear propshaft slip yoke splines (Corporate Bulletin Number 09-04-21-003D or later).
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：2014 and prior GM passenger cars and light duty trucks.
    • Condition：On automatic transmission vehicles, a clunk noise when shifting between Park and Drive, Park and Reverse, or Drive and Reverse.
    • Condition：A clunk noise while driving when the accelerator is quickly depressed and then released.
    • Confirm：Compare the complaint vehicle with a like vehicle; if the results are the same, it is a normal condition.
    • Cause：Gear clearance or freeplay (lash) can produce a clunk whenever a gear is loaded and unloaded quickly or the direction of rotation is reversed.
    • Cause：In a 4-wheel drive vehicle the transfer case gears and their clearances add freeplay on top of that from the rear axle gears, universal joints and transmission.
    • Caution：Because every driveline component has some lash by design, changing driveline components may not reduce the lash satisfactorily.
    • Caution：The clunk noise does not adversely affect durability or performance.
    • Caution：Do not confuse this with the clunk at stop or from launch that is handled by cleaning/lubricating the rear propshaft slip yoke splines (Corporate Bulletin Number 09-04-21-003D or later).

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

    Remedy
    This technical bulletin provides a revision of 99-04-20-002G to add 2013-2014 model years.

  3. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 2017-08-15(1 earlier editions of this document folded here)

    Abnormal Noise or Vibration Investigation Preliminary Information

    1. 1Fault

      • The customer notices a noise or vibration that seems abnormal and may not have been there when the vehicle was new.

    2. 2Finding the cause

      Possible causes

      • Step bars/nerf bars that touch both the truck frame and the cab without insulation carry the noise of a normally operating drive train into the passenger area.
      • Other known contributors are running boards, bug shields, sun visors, vent shades, emergency lights, custom grilles, ski racks and bicycle racks.

      Steps to confirm (in the document’s order)

      1. The first diagnostic step is to evaluate the vehicle for any after-market accessories.
      2. These items must be removed to evaluate whether they contribute to the concern.

    3. 3Correction

      Caution

      • If the root cause is a non-GM aftermarket accessory, no warranty claim should be filed; it is a customer pay item.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2013 and prior passenger cars and light duty trucks, including Saab and Saturn.
    • Condition：The customer notices a noise or vibration that seems abnormal and may not have been there when the vehicle was new.
    • Confirm：The first diagnostic step is to evaluate the vehicle for any after-market accessories.
    • Cause：Step bars/nerf bars that touch both the truck frame and the cab without insulation carry the noise of a normally operating drive train into the passenger area.
    • Cause：Other known contributors are running boards, bug shields, sun visors, vent shades, emergency lights, custom grilles, ski racks and bicycle racks.
    • Confirm：These items must be removed to evaluate whether they contribute to the concern.
    • Caution：If the root cause is a non-GM aftermarket accessory, no warranty claim should be filed; it is a customer pay item.

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

    Remedy
    This Preliminary Information communication advises the technician that a noise or a vibration in the vehicle that seems to be abnormal may not have been there when the vehicle was purchased. Technician should look for Non - General Motors aftermarket accessories installed on the vehicle that can cause these issues.

ELECTRICAL SYSTEM1

  1. Manufacturer communication2001–2006 GMC YUKON DENALI ・ 2017-08-15

    Normal vehicle movement in Park after cold start

    1. 1Fault

      • At start up after a cold soak, the vehicle may rock or move slightly forward or rearward while in Park, sometimes with a clunk noise.

    2. 2Finding the cause

      Possible causes

      • Residual transmission fluid in the clutch packs creates a partial apply on start up.
      • The movement stops when the parking pawl holds and/or the fluid exhausts completely from the clutch packs.

      Steps to confirm (in the document’s order)

      • Verify by comparing with another identically built vehicle under the same cold conditions.

    3. 3Correction

      Repair

      • To prevent the movement, apply the parking brake whenever the vehicle is parked, as the Owner's Manual recommends.

      Caution

      • The condition is normal and no repairs should be attempted.
      • The slight movement has no adverse effect on the transmission.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2016 and earlier GM passenger cars and light duty trucks equipped with an automatic transmission.
    • Condition：At start up after a cold soak, the vehicle may rock or move slightly forward or rearward while in Park, sometimes with a clunk noise.
    • Cause：Residual transmission fluid in the clutch packs creates a partial apply on start up.
    • Cause：The movement stops when the parking pawl holds and/or the fluid exhausts completely from the clutch packs.
    • Caution：The condition is normal and no repairs should be attempted.
    • Confirm：Verify by comparing with another identically built vehicle under the same cold conditions.
    • Caution：The slight movement has no adverse effect on the transmission.
    • Repair：To prevent the movement, apply the parking brake whenever the vehicle is parked, as the Owner's Manual recommends.

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

    Remedy
    This informational bulletin provides information on vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak and that this is considered a normal conditon and no repairs are necessary

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