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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:Loss of engine power, no accelerationLeakNoiseShifting faultVibration or shudder

Record by record

27 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

  • result not stated4

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 (25)

Known issues4L60-E burnt 3-4 clutch pack2

  1. Manufacturer communication2002–2004 GMC YUKON ・ 2004-03-01

    Slipping in 2nd, 3rd or 4th gear on automatic transmissions

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SLIP CONDITION IN 2ND, 3RD OR 4TH DAMAGED 2-4 BAND 3-4 CLUTCH ON THE 4L60E/4L65E AUTOMATIC TRANSMISSION. *TT *MJ

      What the documents say to do

      4L60-E burnt 3-4 clutch pack

      Confirm

      • Test the 3rd accumulator checkball capsule for leakage; a leaking capsule is a leading cause of 3-4 clutch failure.

      Repair

      • Thicker heavy-duty backing plates that eliminate clutch pack flex are available in the aftermarket.

      Caution

      • An obvious leak such as a cracked apply piston should not stop further investigation.
    Read the sentences of the record
    Remedy
    SLIP CONDITION IN 2ND, 3RD OR 4TH DAMAGED 2-4 BAND 3-4 CLUTCH ON THE 4L60E/4L65E AUTOMATIC TRANSMISSION. *TT *MJ

  2. Manufacturer communication2001 GMC YUKON ・ 2001-06-28

    Investigation of 2-4 Band or 3-4 Clutch Damage on Automatic Transmission

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SUBJECT REGARDING AN INVESTIGATION OF 2-4 BAND OR 3-4 CLUTCH DAMAGE ON 4L60E AUTOMATIC TRANSMISSION. *TT

      What the documents say to do

      4L60-E burnt 3-4 clutch pack

      Confirm

      • Test the 3rd accumulator checkball capsule for leakage; a leaking capsule is a leading cause of 3-4 clutch failure.

      Repair

      • Thicker heavy-duty backing plates that eliminate clutch pack flex are available in the aftermarket.

      Caution

      • An obvious leak such as a cracked apply piston should not stop further investigation.
    Read the sentences of the record
    Remedy
    SUBJECT REGARDING AN INVESTIGATION OF 2-4 BAND OR 3-4 CLUTCH DAMAGE ON 4L60E AUTOMATIC TRANSMISSION. *TT

Known issues4L80-E / 4L85-E planetary gear whine in first and second gear2

  1. Manufacturer communication2002 GMC CHEVROLET AND GMC C/K MODELS AND 2002 CADILLAC ESCALADE WITH 4.3L, 4.8L 5.3L OR 6.0L GAS ENGINE (YUKON) ・ 2002-01-01

    1-2, 2-3, or 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission (bulletin 01-07-30-031)

    1. 1Fault

      • 1-2, 2-3, or 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Bulletins – December 2001 01-07-30-031; 1-2, 2-3, or 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission; 2002-2002 Chevrolet and GMC C/K Models and 2002 Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine (VINs W, V, T, U -- RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E Transmission 1-2, 2-3, or 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission

      What the documents say to do

      4L80-E / 4L85-E planetary gear whine in first and second gear

      Confirm

      • Compare the vehicle with an identically built vehicle (same GVWR) before attempting any repairs.

      Repair

      1. If end play is out of specification, inspect and replace the output planetary gear set as necessary.
      2. If end play is within specification, replace the transmission assembly.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Bulletin 01-07-30-031 lists "2002-2002 Chevrolet and GMC C/K Models and 2002 Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine" (VINs W, V, T, U; RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E transmission.
    • Condition：1-2, 2-3, or 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission.

    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
    Bulletins – December 2001 01-07-30-031; 1-2, 2-3, or 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission; 2002-2002 Chevrolet and GMC C/K Models and 2002 Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine (VINs W, V, T, U -- RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E Transmission 1-2, 2-3, or 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission

  2. Manufacturer communication2000 GMC CHEVROLET AND GMC C/K MODELS AND CADILLAC ESCALADE WITH 4.3L, 4.8L 5.3L OR 6.0L GAS ENGINE (YUKON) ・ 2002-01-01

    2-3, 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission (bulletin 01-07-30-013A)

    1. 1Fault

      • 2-3, 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission.

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Bulletins – December 2001 01-07-30-013A; replaces 01-07-30-013; 2- 3, 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission; 1999-2000 Chevrolet and GMC C/K Models and Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine (VINs W, V, T, U -- RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E Transmission 2- 3, 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission

      What the documents say to do

      4L80-E / 4L85-E planetary gear whine in first and second gear

      Confirm

      • Compare the vehicle with an identically built vehicle (same GVWR) before attempting any repairs.

      Repair

      1. If end play is out of specification, inspect and replace the output planetary gear set as necessary.
      2. If end play is within specification, replace the transmission assembly.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Bulletin 01-07-30-013A replaces 01-07-30-013 and lists "1999-2000 Chevrolet and GMC C/K Models and Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine" (VINs W, V, T, U; RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E transmission.
    • Condition：2-3, 3-4 shift characteristics during cold weather operation on the 4L60-E or 4L80-E transmission.

    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
    Bulletins – December 2001 01-07-30-013A; replaces 01-07-30-013; 2- 3, 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission; 1999-2000 Chevrolet and GMC C/K Models and Cadillac Escalade with 4.3L, 4.8L 5.3L or 6.0L Gas Engine (VINs W, V, T, U -- RPOs L35, LR4, LM7, LQ4) and 4L60-E or 4L80-E Transmission 2- 3, 3-4 Shift Characteristics During Cold Weather Operation on 4L60-E or 4L80-E Transmission

Known issues4L60-E / 4L65-E clunk on 2-3 upshift or 3-2 downshift (normal condition)1

  1. Manufacturer communication2005–2006 GMC YUKON DENALI ・ 2018-05-21

    2-3 Upshift and 3-2 Downshift Clunk Normal Condition

    1. 1Fault

      • A clunk noise can be heard on a 2-3 upshift or a 3-2 downshift.
      • The condition may be more pronounced on a 4-wheel drive vehicle because of the additional tolerances in the transfer case.

    2. 2Finding the cause

      Possible causes

      • During a 2-3 upshift the 2-4 band is released and the 3-4 clutch is applied; the timing of this shift can momentarily reverse the torque on the output shaft, which makes the clunk.
      • The same torque reversal can occur on a 3-2 downshift, when the 3-4 clutch is released and the 2-4 band applied.

    3. 3Correction

      Caution

      • For 2005 model year fullsize utilities and pickups, refer to Corporate Bulletin Number 05-07-30-012.
      • This is a normal condition; no repairs should be attempted.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2014 and prior GM passenger cars and light duty trucks with the 4L60-E, 4L65-E or 4L70-E automatic transmission (RPOs M30, M32, M70).
    • Caution：For 2005 model year fullsize utilities and pickups, refer to Corporate Bulletin Number 05-07-30-012.
    • Condition：A clunk noise can be heard on a 2-3 upshift or a 3-2 downshift.
    • Cause：During a 2-3 upshift the 2-4 band is released and the 3-4 clutch is applied; the timing of this shift can momentarily reverse the torque on the output shaft, which makes the clunk.
    • Cause：The same torque reversal can occur on a 3-2 downshift, when the 3-4 clutch is released and the 2-4 band applied.
    • Condition：The condition may be more pronounced on a 4-wheel drive vehicle because of the additional tolerances in the transfer case.
    • Caution：This is a normal condition; no repairs should be attempted.

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

    Remedy
    This information was created to inform the technician that the 2-3 upshift and the 3-2 downshift clunk is caused by the releasing of the 2-4 band and application of the 3-4 clutch assembly during an upshift. Also during a 3-2 downshift, the releasing of the 3-4 clutch during the application of the 2-4 band, can cause torque reversal down the output shaft creating a clunk. This is a normal condition.

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

  1. Manufacturer communication2000–2006 GMC YUKON DENALI ・ 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 issuesLean hesitation, sag or stumble at -6 to +20°C coolant temperature (PCM reprogram)1

  1. Manufacturer communication2000 GMC YUKON ・ 2001-05-01(also printed in 1 other issues)

    Lean hesitation, sag or stumble at -6 to +20°C coolant temperature (bulletin 00-06-03-009A)

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      Repair

      • The correction is to reprogram the PCM.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Bulletin 00-06-03-009A, which replaces 00-06-03-009, lean hesitation, sag or stumble when coolant temperature is between -6 and +20°C, lists 2000 Chevrolet and GMC C/K models (Silverado, Sierra, Suburban, Tahoe, Yukon, Yukon XL) with the 4.8L, 5.3L or 6.0L V8 engine and 4L60-E automatic transmission (RPO M30).
    • Repair：The correction is to reprogram the PCM.

    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
    This review of service bulletins released through mid-April 00-06-03-009A; replaces 00-06-03- 009; Lean Hesitation, Sag or Stumble When Coolant Temperature is Between - 6 and +20°C (Reprogram PCM); 2000 Chevrolet and GMC C/K Models (Silverado, Sierra, Suburban, Tahoe, Yukon, Yukon XL) with 4.8L, 5.3L or 6.0L V8 Engine (VINs V, T, U -- RPOs LR4, LM7, LQ4) with 4L60-E Automatic Transmission (RPO M30) Lean Hesitation, Sag or Stumble When Coolant Temperature is Between - 6 and +20°C (Reprogram PCM)

POWER TRAIN14

  1. Manufacturer communication2004–2006 GMC YUKON ・ 2005-11-09

    Auto Trans/TCC Shudder, Water in Transmission Notice

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      4L60-E/4L65-E AUTOMATIC TRANSMISSION/TORQUE CONVERTER CLUTCH (TCC) SHUDDER, WATER IN TRANSMISSION. *TT

    Read the sentences of the record
    Remedy
    4L60-E/4L65-E AUTOMATIC TRANSMISSION/TORQUE CONVERTER CLUTCH (TCC) SHUDDER, WATER IN TRANSMISSION. *TT

  2. Manufacturer communication2005 GMC YUKON ・ 2005-11-04

    Automatic Transmission 2-3 Shift Clunk Notification

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60-E/4L65-E AUTOMATIC TRANSMISSION 2-3 SHIFT CLUNK. *TT

    Read the sentences of the record
    Remedy
    4L60-E/4L65-E AUTOMATIC TRANSMISSION 2-3 SHIFT CLUNK. *TT

  3. Manufacturer communication2004–2005 GMC YUKON ・ 2005-11-04

    Automatic Transmission Second Gear Start, Lack/Loss of Power When Accelerating

    1. 1Fault

      Not stated

    2. 2Finding the cause

    3. 3Correction

      4L60-E/4L65-E AUTOMATIC TRANSMISSION SECOND GEAR START, LACK/LOSS OF POWER WHEN ACCELERATING FROM A STOP. *TT

    Read the sentences of the record
    Remedy
    4L60-E/4L65-E AUTOMATIC TRANSMISSION SECOND GEAR START, LACK/LOSS OF POWER WHEN ACCELERATING FROM A STOP. *TT

  4. Manufacturer communication2000–2002 GMC YUKON ・ 2005-10-27

    4L60E, 4L65E Replacement Valve Body Gaskets Fit Issue

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

    Read the sentences of the record
    Remedy
    4L60E, 4L65E REPLACEMENT VALVE BODY GASKETS DOES NOT SEEM TO FIT. *TT

  5. Manufacturer communication2005 GMC YUKON ・ 2005-05-11

    4L60E/4L65E No Reverse Communication

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60E/4L65E NO REVERSE. *TT

    Read the sentences of the record
    Remedy
    4L60E/4L65E NO REVERSE. *TT

  6. Manufacturer communication2005–2006 GMC YUKON ・ 2005-04-21

    Investigation of Extension Seal Leaks on 4L60E Automatic Transmission

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      INVESTIGATION OF EXTENSION SEAL LEAKS ON 4L60E AUTOMATIC TRANSMISSION. *TT

    Read the sentences of the record
    Remedy
    INVESTIGATION OF EXTENSION SEAL LEAKS ON 4L60E AUTOMATIC TRANSMISSION. *TT

  7. Manufacturer communication2000–2004 GMC YUKON ・ 2004-08-23

    4L60E/4L65E Intermittent Neutral Condition

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING. *TT 1999-2006 GM CARS, LIGHT DUTY TRUCKS AND UTILITIES. *TT

    Read the sentences of the record
    Remedy
    4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING. *TT 1999-2006 GM CARS, LIGHT DUTY TRUCKS AND UTILITIES. *TT

  8. Manufacturer communication2000–2004 GMC YUKON ・ 2004-07-12

    4L60E, 4L65E Intermittent Neutral from a Stop or Steady Speed

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60E, 4L65E INTERMITTENT NEUTRAL FROM A STOP OR STEADY SPEED. *TT

    Read the sentences of the record
    Remedy
    4L60E, 4L65E INTERMITTENT NEUTRAL FROM A STOP OR STEADY SPEED. *TT

  9. Manufacturer communication2000–2004 GMC YUKON ・ 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 communication2004 GMC YUKON ・ 2004-06-04

    Squawk or Grunt Noise on 2-3 Upshift - Notice

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SQUAWK OR GRUNT NOISE THAT OCCURS ON THE 2-3 UPSHIFT ON VEHICLES WITH 4L60E - M30, 4L60E M32 TRANSMISSION. *TT

    Read the sentences of the record
    Remedy
    SQUAWK OR GRUNT NOISE THAT OCCURS ON THE 2-3 UPSHIFT ON VEHICLES WITH 4L60E - M30, 4L60E M32 TRANSMISSION. *TT

  11. Manufacturer communication2004 GMC YUKON ・ 2004-05-03

    4L60E/4L65E Automatic Transmission Fluid Leak or Slipping Gears Notification

    1. 1Fault

    2. 2Finding the cause

    3. 3Correction

      THE 4L60E/4L65E AUTOMATIC TRANSMISSION MAY EXPERIENCE A LEAK, INOPERATIVE/SLIPPING IN 2ND, 3RD AND 4TH GEARS OR NO MOVEMENT (NO FORWARD OR REVERSE) DUE TO EXCESS FLUID LOSS. SIT BULLETIN 1455088. *TT

    Read the sentences of the record
    Remedy
    THE 4L60E/4L65E AUTOMATIC TRANSMISSION MAY EXPERIENCE A LEAK, INOPERATIVE/SLIPPING IN 2ND, 3RD AND 4TH GEARS OR NO MOVEMENT (NO FORWARD OR REVERSE) DUE TO EXCESS FLUID LOSS. SIT BULLETIN 1455088. *TT

  12. Manufacturer communication2000–2004 GMC YUKON ・ 2004-03-04

    4L60-E Automatic Transmission Oil Pump Design Identification

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT

    Read the sentences of the record
    Remedy
    4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT

  13. Manufacturer communication2004 GMC YUKON DENALI ・ 2003-09-30

    Shift Stabilization and Tow/Haul Mode Feature Notification

    1. 1Fault

      Not stated

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SHIFT STABILIZATION AND TOW/HAUL MODE FEATURE FOR HYDRA-MATIC 4L60-E/4L65-E AND 4L80-E/4L85-E TRANSMISSIONS. *TT

    Read the sentences of the record
    Remedy
    SHIFT STABILIZATION AND TOW/HAUL MODE FEATURE FOR HYDRA-MATIC 4L60-E/4L65-E AND 4L80-E/4L85-E TRANSMISSIONS. *TT

  14. Manufacturer communication2001 GMC YUKON ・ 2001-06-28

    Investigation of Harsh Shifts on 4L60E Automatic Transmission

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      SUBJECT REGARDING INVESTIGATION OF HARSH SHIFTS ON 4L60E AUTOMATIC TRANSMISSION. *TT

    Read the sentences of the record
    Remedy
    SUBJECT REGARDING INVESTIGATION OF HARSH SHIFTS ON 4L60E AUTOMATIC TRANSMISSION. *TT

ENGINE AND ENGINE COOLING2

  1. Manufacturer communication2000–2001 GMC YUKON DENALI ・ 2010-03-25

    GM: Loss of Power/Hesitates on Acceleration

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      GM: LOSS OF POWER HESITATES ON ACCELERATION. 4.3, 4.8, 5.3, 5.7 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E MAY EXPERIENCE A CONDITION OF HESITATES, MISSES OR LOSS OF POWER UNDER ACCELERATION. THE VEHICLE MAY OPERATE AS IF IT IS IN REDUCED POWER MODE. *PE

    Read the sentences of the record
    Remedy
    GM: LOSS OF POWER HESITATES ON ACCELERATION. 4.3, 4.8, 5.3, 5.7 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E MAY EXPERIENCE A CONDITION OF HESITATES, MISSES OR LOSS OF POWER UNDER ACCELERATION. THE VEHICLE MAY OPERATE AS IF IT IS IN REDUCED POWER MODE. *PE

  2. Manufacturer communication2001–2004 GMC YUKON DENALI ・ 2004-07-02

    Power Loss and Acceleration Hesitation on 4.8, 5.3 and 6.0 Engines with 4L60E or 4L65E

    1. 1Fault

    2. 2Finding the cause

      Not stated

    3. 3Correction

      LOSS OF POWER, HESITATES ON ACCELERATION ON 4.8, 5.3 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E TRANSMISSION. *TT

    Read the sentences of the record
    Remedy
    LOSS OF POWER, HESITATES ON ACCELERATION ON 4.8, 5.3 AND 6.0 ENGINES COUPLED WITH THE 4L60E OR 4L65E TRANSMISSION. *TT

ELECTRICAL SYSTEM1

  1. Owner complaint2000 GMC YUKON DENALI ・ 2014-07-11

    Loss of power and hesitation on acceleration at highway speed

    1. 1Fault

    2. 2Finding the cause

      I HAVE LOOKED UP INFORMATION ON ISSUES THIS TRUCK HAS HAD AND 1 OF THEM IS REGISTERED UNDER NHTSA ID # 100032435 / PIP-4695.GM: LOSS OF POWER HESITATES ON ACCELERATION.

    3. 3Correction

    Read the sentences of the record
    Fault
    THE VEHICLE MAY OPERATE AS IF IT IS IN REDUCED POWER MODE.
    Cause
    I HAVE LOOKED UP INFORMATION ON ISSUES THIS TRUCK HAS HAD AND 1 OF THEM IS REGISTERED UNDER NHTSA ID # 100032435 / PIP-4695.GM: LOSS OF POWER HESITATES ON ACCELERATION.
    Remedy
    *PE I HAVE PURCHASED AN AIR MASS FLOW SENSOR, THROTTLE BODY SENSOR, ALL 4 O2 SENSORS, AND A COOLANT SENSOR.

EQUIPMENT1

  1. Manufacturer communication2003–2006 GMC YUKON DENALI ・ 2018-06-04(1 earlier editions of this document folded here)

    Automatic Transmission Oil Cooler Flow Test Essential Tool J-45096

    1. 1Fault

      • In flow mode, an electronic flow meter measures the flow capability of the ATF oil cooling system.

    2. 2Finding the cause

      Steps to confirm (in the document’s order)

      1. On the 4L60-E, the cooler feed (exiting the transmission) is the bottom connector and the return (entering the transmission) is the top connector; J-35944-200 may be required.
      2. On the 4L80-E, the cooler feed is the front connector and the return is the rear connector; J-35944-200 may be required.

    3. 3Correction

      Repair

      • For the flow test and flush procedure, refer to Automatic Transmission Oil Cooler Flushing and Flow Test J-45096 in SI.

      Caution

      • Insufficient oil flow through the ATF oil cooling system will cause premature transmission failure; the required minimum flow rate depends directly on the supply oil temperature.
      • The oil in the supply vessel must be 18°C (65°F) or warmer for the J-45096 to operate.
      • Labor operations that remove the transmission for an internal repair or torque converter replacement include time to flow check and flush the transmission oil cooler system.
      • A flow test and flush uses between 4.7-7.5 L (5-8 qts) of DEXRON VI transmission fluid.
    Read the sentences of the record

    From the manufacturer’s document

    • Applies to：Applies to 2011 and prior GM passenger cars and light duty trucks with an automatic transmission/transaxle.
    • Condition：In flow mode, an electronic flow meter measures the flow capability of the ATF oil cooling system.
    • Caution：Insufficient oil flow through the ATF oil cooling system will cause premature transmission failure; the required minimum flow rate depends directly on the supply oil temperature.
    • Caution：The oil in the supply vessel must be 18°C (65°F) or warmer for the J-45096 to operate.
    • Confirm：On the 4L60-E, the cooler feed (exiting the transmission) is the bottom connector and the return (entering the transmission) is the top connector; J-35944-200 may be required.
    • Confirm：On the 4L80-E, the cooler feed is the front connector and the return is the rear connector; J-35944-200 may be required.
    • Repair：For the flow test and flush procedure, refer to Automatic Transmission Oil Cooler Flushing and Flow Test J-45096 in SI.
    • Caution：Labor operations that remove the transmission for an internal repair or torque converter replacement include time to flow check and flush the transmission oil cooler system.
    • Caution：A flow test and flush uses between 4.7-7.5 L (5-8 qts) of DEXRON VI transmission fluid.

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

    Remedy
    This informational bulletin provides information for Automatic Transmission Oil Cooler Flow Test Essential Tool J-45096 TransFlow.

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