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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:NoiseLeakShifting faultWarning light

Possible causes

「4L80」12 records
Transmission and driveline
34L80-E / 4L85-E planetary gear whine in first and second gear
Causes with no correction stated (1)

Causes the records name for which no check or repair is stated, in a technical document or in a record. Press one for the records that name it.

Transmission and driveline
Transmission: leaking (1)

The documents say what to doOnly records name itThe size of a node, the width of a link and the numbers are records matching this search, not likelihoods.

FaultCrate・GMC Yukon 2000–2006・「4L80」

Candidate cause (the documents say what to do)

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

The 4L80E/4L85E may have planetary gear whine noise in first and second gear.

The noise is typically louder in first gear than in second.

What to do

  1. Compare the vehicle with an identically built vehicle (same GVWR) before attempting any repairs.
  2. The correct end play is between 0.127-0.508 mm (0.005-0.020 in).
  3. 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).
  4. If end play is out of specification, inspect and replace the output planetary gear set as necessary.
  5. If end play is within specification, replace the transmission assembly.
  6. Set rear end play between .005" and .020" using the correct selective thrust washer (674); target between .010" and .015".

Caution: This planetary gear whine can be characteristic of the 4L80E/4L85E.

What is needed

Parts and materials
  • Output planetary gear set (if end play is out of specification; inspected and replaced as necessary)
  • Transmission assembly (if end play is within specification)
  • The correct selective thrust washer (674), used to set rear end play
Labor time
Not stated
Special tools
Not stated
Scan tool
Not stated

Only what the technical documents state. "Not stated" does not mean not needed.

In the records

  • Output Planetary Gear Set: replaced 1
  • Transmission: replaced 1
See the evidence (4 technical documents, 3 records)

Passages of the technical documents

  • The bulletin covers 1999-2007 GMC Sierra and Yukon XL.

    1999-2007 GMC Sierra, Yukon XL

    General Motors (published by NHTSA) 2012-12-17

  • It applies to vehicles with the 4L80E (RPO MT1) or 4L85E (RPO MN8).

    with 4L80E (RPO MT1) or 4L85E (RPO MN8)

    General Motors (published by NHTSA) 2012-12-17

  • The 4L80E/4L85E may have planetary gear whine noise in first and second gear.

    The 4L80E/4L85E automatic transmission may experience a condition of planetary gear whine noise in first and second gear.

    General Motors (published by NHTSA) 2012-12-17

  • The noise is typically louder in first gear than in second.

    The planetary gear noise is typically louder in first gear as compared to second.

    General Motors (published by NHTSA) 2012-12-17

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Records

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A cause or a result a complaint states is the owner’s view or what a dealer told them, not an established fact.

Put together by FaultCrate from public records and technical documents. The cause and the repair are for the workshop to decide with the vehicle in front of it. Counts are records, not failure rates.