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GMC Yukon XLModel years 2000–2006

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Transmission and drivelineModel years 1999–2006Manufacturer

4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)

1999-2006 GMC Savana, Sierra, Yukon, Yukon XL with 4L60E, 4L65E or 4L70E (RPO M30, M32 or M70) and service input housing part number 17803687

FaultCrate・4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)

A few transmissions may slip or not engage any forward gear immediately after the input housing is replaced.

The input housing from GM Service Parts may have an incorrectly drilled input shaft.

What to do

  1. Inspect the 3-4 clutch and forward clutch oil feed passages for leakage between circuits.
  2. 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.
  3. 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.
  4. Order new housing part number 19125752.
  5. 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

  • Do not replace an input housing solely because of a small air leak between the shaft and housing.

In the records

  • Input Housing: replaced 1

Applies to

  • The bulletin covers 1999-2006 GMC Savana, Sierra, Yukon and Yukon XL.
  • It applies only to input housing (621) service part number 17803687.
See the evidence (2 documents, 10 passages)
DocumentPublisherDate
[1]PIP5072: Slip In Forward Ranges Immediately After Replacing The Input Housing ↗
ManufacturerGeneral Motors (published by NHTSA)
2012-10-30
[2]PIP5072 Slip In Forward Ranges Immediately After Replacing The Input Housing - 621 - Check Input Housing - 621 - For Improperly Drilled Feed Holes ↗
ManufacturerGeneral Motors
—

  • Applies toThe bulletin covers 1999-2006 GMC Savana, Sierra, Yukon and Yukon XL.

    1999-2006 GMC Savana, Sierra, Yukon, Yukon XL— [1] Models

  • Applies toIt applies only to input housing (621) service part number 17803687.

    This information only applies to Input Housing (621) with Service Part Number 17803687.— [1] Condition

  • First signsA few transmissions may slip or not engage any forward gear immediately after the input housing is replaced.

    A few transmissions may experience a condition of slip or no engagement to any forward gear immediately after replacing the Input Housing (621).— [1] Condition

  • Why it happensThe input housing from GM Service Parts may have an incorrectly drilled input shaft.

    The Input Housing (621) from GM Service Parts may have an incorrectly drilled input shaft.— [1] Condition

  • How to confirmInspect the 3-4 clutch and forward clutch oil feed passages for leakage between circuits.

    Inspect the 3-4 clutch and the forward clutch oil feed passages for leakage between circuits.— [1] Recommendation

  • RepairOrder new housing part number 19125752.

    (Order new housing part number 19125752.)— [1] Recommendation

  • CautionDo not replace an input housing solely because of a small air leak between the shaft and housing.

    Do not replace an Input Housing (621) assembly solely because of a small air leak between the shaft and housing.— [1] Recommendation

  • How to confirmWith 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.

    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 (621) completely assembled.— [2]

  • How to confirmAir 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.

    Air should not leak out of the 3-4 clutch feed hole when applying air to the forward clutch feed hole and air should not leak out of the forward clutch feed hole when applying air to the 3-4 clutch feed hole.— [2]

  • RepairPart number 19125752, Input Housing And Turbine Shaft Assembly, quantity 1.

    19125752 Input Housing And Turbine Shaft Assembly 1— [2]

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.

Records under this issue 1

Manufacturer communication 1

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