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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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2 conditions added

Common on this vehicle:Warning lightHard start or long crankDoes not startNoise

Possible causes

11 causes not drawn

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.

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.

In the records

No record states work done for this cause.

See the evidence (1 technical documents, 0 records)

Passages of the technical documents

  • 1999-2007 GMC Sierra, Yukon XL

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

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

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

  • 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 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.