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GMC Yukon 2000–2006

GMC YukonModel years 2000–2006

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Common on this vehicle:Leak

issue4L60-E slip or no forward engagement right after input housing replacement (service part 17803687)Remove

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Symptom

Component named as the cause

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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.