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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:NoiseLeakLoss of engine power, no accelerationVibration or shudderWarning lightGauge or instrument faultMisfire or rough idle

Record by record

21 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 was fixed1
  • says it held for a while1
  • result not stated2

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 issuesHydro-boost brake assist and power steering share one hydraulic supply (four campaigns)2

  1. Recall2000 GMC YUKON XL ・ 2005-07-01

    Hydraulic Pump Driveshaft Fracture Recall

    1. 1Fault

      • The driveshaft in the power steering hydraulic pump can fracture, which results in loss of hydraulic power assist for steering.
      • On vehicles with Hydro-Boost power brakes the same condition can also remove power assist for braking; an inoperative pump raises steering effort, and braking effort on Hydro-Boost vehicles, but the vehicle can still be steered and slowed.

    2. 2Finding the cause

      Possible causes

      • The pump supplier, Delphi-Saginaw Plant 3, had salvaged 45,000 rejected pump rotors by manually regrinding them from oversize dimensions to a thickness within tolerance.

    3. 3Correction

      Repair

      1. Dealers are to replace the power steering hydraulic pump.
      2. On EVO equipped pumps, lubricate the new o-ring seal taken from the replacement pump fitting with clean power steering fluid and install it in the correct groove in the EVO actuator.
      3. Tighten the EVO actuator assembly to 50 N·m (37 lb ft).
      4. Install the front mounting bolts and tighten them to 50 N·m (37 lb ft).
      5. Install the rear mounting nuts to the studs and tighten them to 50 N·m (37 lb ft).
      3 more points

      Parts

      • Pumps for CK models: 88963602 (CK w/L31/JB7 Pwr Brk Sys), 88963606 (CK w/JB8/JD7 Hydr Brk Sys), 88963609 (CK w/JF9 4-Whl Disc Brk Sys) and 26081016 (CK w/JH6 Hydr Brk Sys), 1 per vehicle.
      • Hydraulic power steering fluid, 89021184 (U.S.) or 89021186 (Canada), as required.

      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

      • Tools required for the CK procedure: J 25034-C pulley remover, J 25033-C pulley installer, J 43485 bleeder adapter and J 35555 Metal Mityvac.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The program covers certain 2000 model year 2500/3500 Series Chevrolet CK, Silverado, Suburban and Express and GMC Sierra, Yukon XL and Savana vehicles built within the listed VIN breakpoints.
    • Applies to：The defect notice names certain 2000 model year series 2500 and 3500 vehicles manufactured from May 1, 1999 through October 14, 1999.
    • Condition：The driveshaft in the power steering hydraulic pump can fracture, which results in loss of hydraulic power assist for steering.
    • Condition：On vehicles with Hydro-Boost power brakes the same condition can also remove power assist for braking; an inoperative pump raises steering effort, and braking effort on Hydro-Boost vehicles, but the vehicle can still be steered and slowed.
    • Cause：The pump supplier, Delphi-Saginaw Plant 3, had salvaged 45,000 rejected pump rotors by manually regrinding them from oversize dimensions to a thickness within tolerance.
    • Repair：Dealers are to replace the power steering hydraulic pump.
    • Parts：Pumps for CK models: 88963602 (CK w/L31/JB7 Pwr Brk Sys), 88963606 (CK w/JB8/JD7 Hydr Brk Sys), 88963609 (CK w/JF9 4-Whl Disc Brk Sys) and 26081016 (CK w/JH6 Hydr Brk Sys), 1 per vehicle.
    • Parts：Hydraulic power steering fluid, 89021184 (U.S.) or 89021186 (Canada), as required.
    • Caution：Tools required for the CK procedure: J 25034-C pulley remover, J 25033-C pulley installer, J 43485 bleeder adapter and J 35555 Metal Mityvac.
    • Repair：On EVO equipped pumps, lubricate the new o-ring seal taken from the replacement pump fitting with clean power steering fluid and install it in the correct groove in the EVO actuator.
    • Repair：Tighten the EVO actuator assembly to 50 N·m (37 lb ft).
    • Repair：Install the front mounting bolts and tighten them to 50 N·m (37 lb ft).
    • Repair：Install the rear mounting nuts to the studs and tighten them to 50 N·m (37 lb ft).
    • Repair：Install the pulley flush with 0.5 mm (0.020 in) play.
    • Repair：To bleed the system, apply a vacuum of 68 kPa (20 in Hg) maximum at the pump reservoir filler neck and wait 1 minute.
    • Repair：Start the engine, let it idle, and turn the steering wheel 180-360 degrees in both directions 5 times.
    Cause
    SOME PICKUP TRUCKS, VANS, AND SPORT UTILITY VEHICLES EQUIPPED WITH A HYDRAULIC PUMP DRIVESHAFT THAT CAN FRACTURE, RESULTING IN IMMEDIATE LOSS OF HYDRAULIC POWER STEERING ASSIST. ON CERTAIN VEHICLES EQUIPPED WITH HYDRO-BOOST POWER BRAKES, THE SAME CONDITION CAN RESULT IN LOSS OF POWER ASSIST FOR BRAKING AFTER THE RESERVE PRESSURE IS DEPLETED.
    Remedy
    DEALERS WILL REPLACE THE HYDRAULIC PUMP. THE CAMPAIGN BEGAN ON FEBRUARY 14, 2005. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438 OR GMC AT 1-866-996-9463.
    Consequence
    AN INOPERATIVE PUMP CAN CAUSE INCREASED STEERING EFFORT, AND IN HYDRO-BOOST EQUIPPED VEHICLES ALSO INCREASED BRAKING EFFORT, BUT DOES NOT COMPLETELY ELIMINATE THE ABILITY TO STEER OR SLOW THE VEHICLE.

  2. Owner complaint2000 GMC YUKON XL 1500 ・ 2009-02-25

    Power steering failed during 3-point turn on dirt road

    1. 1Fault

      MAKING 3-POINT TURN ON DIRT ROAD, POWER STEERING FAILED.

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Fault
    MAKING 3-POINT TURN ON DIRT ROAD, POWER STEERING FAILED.
    Inspection
    UPON INSPECTION AT REPAIR SHOP, FOUND THAT SHAFT ON POWER STEERING PUMP HAD FRACTURED.

Known issues4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)1

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

    Input Housing Inspection for Forward Range Slip

    1. 1Fault

      • A few transmissions may slip or have no engagement in any forward gear immediately after the Input Housing (621) is replaced.

    2. 2Finding the cause

      Possible causes

      • The Input Housing (621) from GM Service Parts may have an incorrectly drilled input shaft.

      Steps to confirm (in the document’s order)

      1. With the Input Housing (621) completely assembled, apply regulated compressed air to the 3-4 clutch feed hole and the forward clutch feed hole one at a time.
      2. Air should not leak out of the 3-4 clutch feed hole when air is applied to the forward clutch feed hole, and not out of the forward clutch feed hole when air is applied to the 3-4 clutch feed hole.

    3. 3Correction

      Repair

      • If air leaks between the two feed holes, replace the Input Housing (621) with one from GM Service Parts, ordering new housing part number 19125752.

      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 19125752, Input Housing And Turbine Shaft Assembly, 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

      • This information only applies to Input Housing (621) with service part number 17803687; it does not apply to GM service transmission assemblies or original equipment transmission assemblies.
      • When testing a fully assembled housing, a small amount of air leaking between the input shaft and the housing does not indicate a defective part.
      • Do not replace an Input Housing (621) assembly solely because of a small air leak between the shaft and housing.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：The model list includes the 1999-2006 GMC Savana, Sierra, Yukon and Yukon XL.
    • Applies to：It applies to vehicles equipped with the 4L60E, 4L65E or 4L70E automatic transmission (RPO M30, M32 or M70) and service input housing part number 17803687.
    • Caution：This information only applies to Input Housing (621) with service part number 17803687; it does not apply to GM service transmission assemblies or original equipment transmission assemblies.
    • Condition：A few transmissions may slip or have no engagement in any forward gear immediately after the Input Housing (621) is replaced.
    • Cause：The Input Housing (621) from GM Service Parts may have an incorrectly drilled input shaft.
    • Confirm：With the Input Housing (621) completely assembled, apply regulated compressed air to the 3-4 clutch feed hole and the forward clutch feed hole one at a time.
    • Confirm：Air should not leak out of the 3-4 clutch feed hole when air is applied to the forward clutch feed hole, and not out of the forward clutch feed hole when air is applied to the 3-4 clutch feed hole.
    • Repair：If air leaks between the two feed holes, replace the Input Housing (621) with one from GM Service Parts, ordering new housing part number 19125752.
    • Caution：When testing a fully assembled housing, a small amount of air leaking between the input shaft and the housing does not indicate a defective part.
    • Caution：Do not replace an Input Housing (621) assembly solely because of a small air leak between the shaft and housing.
    • Parts：Part number 19125752, Input Housing And Turbine Shaft Assembly, quantity 1.

    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 slip in forward ranges immediately after replacing the input housing. Technician will inspect the 3-4 clutches and the forward clutch oil feed passages for leakage between circuits. Technician should apply regulated compressed air to the 3-4 clutch feed hole and the forward clutch feed hole one at a time with the input housing. Technician will need to replace the input housing if there is an air leak 3-4 clutches.

Known issues4L80-E / 4L85-E planetary gear whine in first and second gear1

  1. Manufacturer communication2000–2006 GMC YUKON XL ・ 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 issuesSingle-cylinder misfire (P0300-P0308) and/or chirp, squeak or tick at camshaft speed: worn cam lobe / lifter, valve or valve spring1

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

    Service Engine Soon Lamp, Misfire, and Engine Noise Information

    1. 1Fault

      • With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder that 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); it may be a chirp, squeak, squeal or tick and may increase off idle.

    2. 2Finding the cause

      Possible causes

      • When 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 valve side, push rod side and side of each rocker arm; if pressure on the valve side changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
      2. Measure cam lobe lift at the push rod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift if a lifter roller and/or cam lobe is worn.
      3. A good indicator of a sticking valve is misfires that continue to count on an aggressive deceleration with engine braking.
      4. For a suspected sticking valve, snap the valve onto its seat and confirm it comes off easily; if force is needed to tap it off the seat, excessive carbon build up exists, which may be repaired by decarboning the engine.
      5. The Cylinder Leakage Test outlined in SI should isolate valve leakage by finding excessive leakage past an intake or exhaust valve compared with the others.
      1 more points

    3. 3Correction

      Repair

      • If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters per SI, and also replace the plastic lifter guide for the lifter that had the damage.

      Caution

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

    From the manufacturer’s document

    • Applies to：The model list names 1999-2013 GMC Savana, Sierra and Yukon with a V8 engine.
    • Condition：With the SES light on, a P0300-P0308 DTC is found with misfires counting on a single cylinder that 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); it may be a chirp, squeak, squeal or tick and may increase off idle.
    • Cause：When 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 valve side, push rod side and side of each rocker arm; if pressure on the valve side changes the noise, it is most likely a lifter and/or cam lobe concern on that cylinder.
    • Confirm：Measure cam lobe lift at the push rod side of the rocker arm and compare with other rockers on the same bank; the misfiring or ticking cylinder should have clearly less lift if a lifter roller and/or cam lobe is worn.
    • Confirm：A good indicator of a sticking valve is misfires that continue to count on an aggressive deceleration with engine braking.
    • Confirm：For a suspected sticking valve, snap the valve onto its seat and confirm it comes off easily; if force is needed to tap it off the seat, excessive carbon build up exists, which may be repaired by decarboning the engine.
    • Confirm：The Cylinder Leakage Test outlined in SI should isolate valve leakage by finding excessive leakage past an intake or exhaust valve compared with the others.
    • Confirm：A broken valve spring may stay stacked together and be hard to see, so lightly push on different places on the springs with a small hammer handle.
    • Repair：If a worn camshaft lobe or lifter roller is found, replace the camshaft and all lifters per SI, and also replace the plastic lifter guide for the lifter that had the damage.
    • Caution：A worn cam lobe is easy to overlook through the lifter bores, and unworn lifter rollers do not mean the related cam lobes are okay; both must be carefully inspected.

    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.

POWER TRAIN12

  1. Owner complaint2000 GMC YUKON XL ・ 2005-07-28

    Loss of power steering and braking assist after towing

    1. 1Fault

      THEN REALIZED THAT ALL POWER ASSISTED BRAKING AND STEERING WAS GONE.

    2. 2Finding the cause

    3. 3Correction

    Read the sentences of the record
    Fault
    THEN REALIZED THAT ALL POWER ASSISTED BRAKING AND STEERING WAS GONE.
    Cause
    ON CERTAIN VEHICLES EQUIPPED WITH HYDRO-BOOST POWER BRAKES, THE SAME CONDITION CAN RESULT IN LOSS OF POWER ASSIST FOR BRAKING AFTER THE RESERVE PRESSURE IS DEPLETED."
    Outcome
    SINCE THE REPAIR, THE POWER STEERING AND BRAKING HAVE WORKED PROPERLY, EVEN IN TOWING.

  2. Manufacturer communication2000–2006 GMC YUKON XL 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.

  3. Manufacturer communication2000–2006 GMC YUKON XL 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.

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

    American Axle Manufacturing Axle Setup Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. If the measured pinion shim comes out near either end of the range, compare it with the shim that was removed or recheck the setup of the measuring tools.
      2. To verify side bearing preload, the total torque to turn at the pinion should rise 5 - 10 in. lbs (= 0.565–1.13 N·m) after the differential case is installed.
      3. Axle shaft end play specification is 0.012 inch (= 0.305 mm) per side; radial (up and down) is 0.002 - 0.003 inch (= 0.0508–0.0762 mm).

    3. 3Correction

      Repair

      1. On an 8.6 axle the pinion shim used or stacked behind the pinion is 0.050 inch (= 1.27 mm) at most and 0.020 inch (= 0.508 mm) at least.
      2. Set backlash to 0.003 to 0.005 inch (= 0.0762–0.127 mm) on a new ring and pinion for any AAM application, and check the gear pattern.
      3. Rule of thumb for an 8.6 inch (= 218.4 mm) axle with a 5 cut gear set: use a 0.035 inch (= 0.889 mm) pinion shim and set backlash to 0.004 inch (= 0.102 mm).
      4. Use backlash to move the pattern heel to toe, and the pinion shim to move the pattern height (crest to root).
      5. Drive pinion bearing preload is 15 - 30 in. lbs (= 1.69–3.39 N·m) with new bearings; with old bearings, check the rolling torque before disassembly and reset to only 3 - 5 in. lbs (= 0.339–0.565 N·m) above the original.
      1 more points

      Caution

      • A ring and pinion can be reused or adjusted only below 500 miles (= 804.7 km) and only if not used for towing; if the vehicle has towed anything, the gear set must be replaced.
      • A "roller coaster" or "hourglass" pattern on the bearings may be normal up to 10,000 miles (= 16,093 km) and possibly longer, because the bearings have not fully broken in.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 1999-2013 GM light duty trucks and utilities.
    • Repair：On an 8.6 axle the pinion shim used or stacked behind the pinion is 0.050 inch (= 1.27 mm) at most and 0.020 inch (= 0.508 mm) at least.
    • Confirm：If the measured pinion shim comes out near either end of the range, compare it with the shim that was removed or recheck the setup of the measuring tools.
    • Repair：Set backlash to 0.003 to 0.005 inch (= 0.0762–0.127 mm) on a new ring and pinion for any AAM application, and check the gear pattern.
    • Caution：A ring and pinion can be reused or adjusted only below 500 miles (= 804.7 km) and only if not used for towing; if the vehicle has towed anything, the gear set must be replaced.
    • Caution：A "roller coaster" or "hourglass" pattern on the bearings may be normal up to 10,000 miles (= 16,093 km) and possibly longer, because the bearings have not fully broken in.
    • Repair：Rule of thumb for an 8.6 inch (= 218.4 mm) axle with a 5 cut gear set: use a 0.035 inch (= 0.889 mm) pinion shim and set backlash to 0.004 inch (= 0.102 mm).
    • Repair：Use backlash to move the pattern heel to toe, and the pinion shim to move the pattern height (crest to root).
    • Repair：Drive pinion bearing preload is 15 - 30 in. lbs (= 1.69–3.39 N·m) with new bearings; with old bearings, check the rolling torque before disassembly and reset to only 3 - 5 in. lbs (= 0.339–0.565 N·m) above the original.
    • Confirm：To verify side bearing preload, the total torque to turn at the pinion should rise 5 - 10 in. lbs (= 0.565–1.13 N·m) after the differential case is installed.
    • Repair：Use a new pinion nut whenever the old one is removed; never reuse a used nut.
    • Confirm：Axle shaft end play specification is 0.012 inch (= 0.305 mm) per side; radial (up and down) is 0.002 - 0.003 inch (= 0.0508–0.0762 mm).

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

    Remedy
    This Preliminary Information communication provides information to the technician with the axel setup information from American Axle Manufacturing. Technician should be advised that the maximum pinion shim to be used or stacked behind the pinion is 0.050?, and the minimum pinion shim is 0.020? for an 8.6 axle. The range for available pinion depth shims for the 10.5? axle is 0.006? to 0.024?. When setting the backlash it should be set between 0.003? to 0.005? on a new ring and pinion for any American Axle Manufacturing application. The ring and pinion can be reused or adjusted if the mileage is less than 500 miles (= 804.7 km), if not used for towing. Technician should be advised that a ?roller coaster? or ?hourglass? pattern on the bearings may be normal up to 10,000 miles (= 16,093 km) and possibly longer. With a mis-machined housing you may get a heel pattern on both sides of the gear teeth at build up can generally be corrected with backlash adjustments. When setting up an 8.6? axle with a 5 cut gear set is to use a 0.035? pinion shim and set backlash to 0.004?. When using the newer 2 cut gear set also use a 0.035? pinion shim and still set backlash to 0.004?. To set the gear pattern use backlash to adjust the pattern heel to toe. Use the pinion shim to adjust the height of the pattern. The proper drive pinion bearing pre-load is from 15 - 30 inch pounds (= 1.69–3.39 N·m) with new bearings. The total torque to turn after the differential case is installed should increase 5 - 10 inch pounds (= 0.565–1.13 N·m) at the pinion. A new pinion nut must be used whenever the old one is removed. The axle shaft end play specification is 0.012? per side and the radial specification is 0.002? - 0.003?. Technician should be advised that synthetic lube can be used in all new American Axle Manufacturing axle assemblies. The new pinion seal for the 8.6? axle assembly is a two piece design.

  5. Manufacturer communication2000–2006 GMC YUKON XL ・ 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

  6. Owner complaint2000 GMC YUKON XL ・ 2006-02-01

    Loud racing noise and grinding in transmission, loss of power while driving 65 MPH

    1. 1Fault

    2. 2Finding the cause

    3. 3CorrectionNot repaired

    Read the sentences of the record
    Fault
    DT*: THE CONTACT STATED WHILE DRIVING THE VEHICLE GOING 65MPH (= 104.6 km/h) A LOUD RACING NOISE COULD BE HEARD IN THE TRANSMISSION, THE GEARS SOUNDED LIKE THEY WERE GRINDING, THE VEHICLE LOST ALL POWER.
    Remedy
    NO REPAIRS MADE AT THIS TIME.
    Inspection
    UPON INSPECTION THE TRANSMISSION WAS FOUND TO BE DEFECTIVE.

  7. Manufacturer communication2000–2001 GMC YUKON XL DENALI ・ 2004-11-05

    Automatic Transmission Harsh TCC Apply/DTC P1870 or P074

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      00-01 4L80-E AUTOMATIC TRANSMISSION MAY EXPERIENCE A HARSH TCC APPLY AND/OR DIAGNOSTIC TROUBLE CODE P1870 OR P074. *TC

    Read the sentences of the record
    Remedy
    00-01 4L80-E AUTOMATIC TRANSMISSION MAY EXPERIENCE A HARSH TCC APPLY AND/OR DIAGNOSTIC TROUBLE CODE P1870 OR P074. *TC

  8. Manufacturer communication2000–2005 GMC YUKON XL DENALI ・ 2004-11-03

    NVG149 NP3 Transfer Case Bind or Shudder on Turns

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      NVG149 NP3 TRANSFER CASE MAY EXHIBIT A BIND OR SHUDDER ON TURNS. *TC

    Read the sentences of the record
    Remedy
    NVG149 NP3 TRANSFER CASE MAY EXHIBIT A BIND OR SHUDDER ON TURNS. *TC

  9. Manufacturer communication2000–2004 GMC YUKON XL ・ 2004-06-04

    Forward Low Reverse Waved Steel Clutch Plate Appearance Change

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE. *TT

    Read the sentences of the record
    Remedy
    4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE. *TT

  10. Manufacturer communication2000–2003 GMC YUKON XL ・ 2003-12-04

    Transmission Stuck in Third Gear or Inoperative Instrument Cluster

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE. *TT

    Read the sentences of the record
    Remedy
    MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE. *TT

  11. Manufacturer communication2000–2004 GMC YUKON XL DENALI ・ 2003-04-17

    Whine Noise from Rear Axle

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      WHINE NOISE FROM REAR AXLE. *TT UPDATE. *TT

    Read the sentences of the record
    Remedy
    WHINE NOISE FROM REAR AXLE. *TT UPDATE. *TT

  12. Owner complaint2000 GMC YUKON XL 1500 ・ 2009-11-28

    Loose right front hub bearing assembly with noise

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

ENGINE AND ENGINE COOLING2

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

    Piston Installation Procedure

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      • Refer to the Engine Mechanical Specification in SI for the correct bore and piston specification.

    3. 3Correction

      Repair

      1. When installing a piston into a cylinder, use a ring compressor sleeve or equivalent for best results.
      2. Choose a sleeve with a smooth radius that tapers down to the specific bore size.
      3. Select a size only slightly bigger than the piston diameter and not larger than the cylinder bore diameter.

      Caution

      • If a sleeve is unavailable in the needed size, a universal ring compressor will work but is more difficult to use.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2024 and earlier GM passenger cars and trucks.
    • Repair：When installing a piston into a cylinder, use a ring compressor sleeve or equivalent for best results.
    • Repair：Choose a sleeve with a smooth radius that tapers down to the specific bore size.
    • Repair：Select a size only slightly bigger than the piston diameter and not larger than the cylinder bore diameter.
    • Confirm：Refer to the Engine Mechanical Specification in SI for the correct bore and piston specification.
    • Caution：If a sleeve is unavailable in the needed size, a universal ring compressor will work but is more difficult to use.

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

    Remedy
    This PI bulletin advises the technician on the proper way to install the pistons in an engine.

  2. Manufacturer communication2000–2006 GMC YUKON XL DENALI ・ 2023-09-26

    Normal Transmission Shift and Throttle Response Delay

    1. 1Fault

      • A sag or hesitation may be noticed when coasting at low speeds of less than 24 km/h (15 mph) with a closed throttle and then aggressively applying the throttle.
      • With an automatic transmission, after a hard complete stop with a closed throttle immediately followed by an aggressive throttle opening, the downshifts may not be completed by the time the throttle is opened.
      • A sag or hesitation may also be noticed while cruising at highway speeds and then aggressively increasing the throttle, forcing a down-shift.

    2. 2Finding the cause

      Possible causes

      • In this maneuver the throttle blade is opened slowly for up to 0.7 seconds, even though the accelerator is applied aggressively, to help minimize driveline lash and clunking.
      • As a result, approximately 0.5 seconds of zero torque may be commanded to allow the shift to first gear to occur.

    3. 3Correction

      Caution

      • All of these conditions are a result of Torque Management and should be considered normal; no repairs should be attempted.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：GM passenger cars and trucks, model years 2000 to 2024.
    • Condition：A sag or hesitation may be noticed when coasting at low speeds of less than 24 km/h (15 mph) with a closed throttle and then aggressively applying the throttle.
    • Cause：In this maneuver the throttle blade is opened slowly for up to 0.7 seconds, even though the accelerator is applied aggressively, to help minimize driveline lash and clunking.
    • Condition：With an automatic transmission, after a hard complete stop with a closed throttle immediately followed by an aggressive throttle opening, the downshifts may not be completed by the time the throttle is opened.
    • Cause：As a result, approximately 0.5 seconds of zero torque may be commanded to allow the shift to first gear to occur.
    • Condition：A sag or hesitation may also be noticed while cruising at highway speeds and then aggressively increasing the throttle, forcing a down-shift.
    • Caution：All of these conditions are a result of Torque Management and should be considered normal; no repairs should be attempted.

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

    Remedy
    The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

AIR BAGS1

  1. Owner complaint2000 GMC YUKON XL 1500 ・ 2017-11-06

    Airbags failed to deploy after severe front collision at 55+ mph

    1. 1Fault

      NOT ONE AIRBAG WENT OFF IN MY TRUCK.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Not stated

    Read the sentences of the record
    Fault
    NOT ONE AIRBAG WENT OFF IN MY TRUCK.
    Consequence
    MY FRONT END TOOK ALL MY DAMAGE.

EQUIPMENT1

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

    4T65E Transmission Cooler Line Fittings Information

    1. 1Fault

      Not stated

    2. 2Finding the cause

    3. 3Correction

      This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

    Read the sentences of the record
    Remedy
    This Preliminary Information communication provides information to the technician about cooler line fittings that come with the 4T65E General Motors remanufactured transmission may not be the same as Original equipment manufacturer quick connect verses inverted flare. Dealer will need to contact General Motors Technical Assistance Center for further assistance.

1 owner complaints have no classified sentences yet, so their causes and repairs are not picked out. Their text is in the list of records.