GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Raise the vehicle. Support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the transmission oil pan. Refer to Oil Pan Replacement .
  4. Remove the transmission oil filter assembly. Refer to Automatic Transmission Fluid Filter and Seal Replacement .

  5. Object Number: 104550  Size: SH
  6. Remove the oil feed pipe bolts.
  7. Inspect the eight oil feed pipe seal rings.
  8. Replace the seal rings only if the seal rings are cut, swollen or damaged.

  9. Object Number: 104551  Size: SH
  10. Remove the low/reverse band oil pipe assembly.
  11. Remove the eight low/reverse band oil pipe assembly seals.
  12. Inspect the oil feed pipes for plugged passages, bent pipes, or cracks.
  13. Inspect the oil feed pipe seal rings. Verify the proper location of the seal rings. Replace the seal rings if these are cut, swelled or damaged.

Installation Procedure


    Object Number: 104551  Size: SH
  1. Install the eight low/reverse band oil pipe assembly seals.
  2. Install the low/reverse band oil feed pipe assembly onto the transmission.

  3. Object Number: 104550  Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Hand start the bolts that attach the oil feed pipe assembly to the transmission.
  5. Tighten
    Tighten the bolts to 14 N·m (124 lb in).

  6. Install the transmission oil filter assembly. Refer to Automatic Transmission Fluid Filter and Seal Replacement .
  7. Install the transmission oil pan and gasket. Refer to Automatic Transmission Fluid Filter and Seal Replacement .
  8. Lower the vehicle.
  9. Refill the transmission to the proper level.
  10. Inspect the transmission oil level. Refer to Transmission Fluid Check .
  11. Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

  12. Reset the TAP values. Refer to Transmission Adaptive Functions .