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. Remove the shift cables.

  3. Object Number: 12402  Size: SH
  4. Remove the shift control box bolts.
  5. Remove the shift control box.
  6. Disassemble the shift control box.

  7. Object Number: 12403  Size: SH
  8. Assemble the shift control box using the following procedure:
  9.         Important: Align the serrations on the stopper cam and internal lever.

    6.1. Assemble the stopper cam and the internal lever.
    6.2. Install the stopper cam and internal lever to the shift lever assembly.
  10. Inspect the alignment of the stopper cam with the center on the internal lever.
  11. Reverse the inhibitor mechanism for proper operation.
  12. Install the new roll pin to the internal lever.

Installation Procedure


    Object Number: 12402  Size: SH
  1. Install the shift control box.
  2. Install the shift control box bolts.
  3. Tighten
    Tighten the bolts to 17 N·m (13 lb ft).

    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. Install the shift cables.
  5. Inspect for proper shifting.
  6. Connect the negative battery cable.