GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Disconnect the negative battery cable. Refer to

    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.

    in General Information.
  2. Raise the vehicle. Support the vehicle. Refer to General Vehicle Lifting and Jacking in General Information.

  3. Object Number: 104527  Size: SH
  4. Remove the lo and the reverse band servo cover bolts.

  5. Object Number: 104528  Size: SH
  6. Remove the lo and the reverse band servo cover.

  7. Object Number: 104530  Size: SH
  8. Remove the lo and the reverse band servo snap ring.

  9. Object Number: 104531  Size: SH
  10. Remove the reverse band servo cover seal.
  11. Remove the reverse band servo piston seal.

  12. Object Number: 104532  Size: SH
  13. Remove the lo and the reverse band servo piston.
  14. Remove the 4th band servo piston inner spring.
  15. Remove the lo and the reverse band servo piston pin.

  16. Object Number: 104533  Size: SH
  17. Remove the lo and the reverse band servo piston spring.

Installation Procedure


    Object Number: 104533  Size: SH
  1. Install the lo and the reverse band servo piston spring.

  2. Object Number: 104532  Size: SH
  3. Install the lo and the reverse band servo piston pin.
  4. Install the 4th band servo piston inner spring.
  5. Install the lo and the reverse band servo piston.

  6. Object Number: 104531  Size: SH
  7. Install the reverse band servo piston seal.
  8. Install the reverse band servo cover seal.

  9. Object Number: 104530  Size: SH
  10. Install the lo and the reverse band servo snap ring.

  11. Object Number: 104528  Size: SH
  12. Install the lo and the reverse band servo cover.

  13. Object Number: 104527  Size: SH
  14. Install the lo and the reverse band servo cover bolts.
  15. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

    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.

  16. Lower the vehicle.
  17. Connect the negative battery cable.