GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 642475  Size: SH
  1. Remove the rear compartment trim. Refer to Rear Compartment Trim Panel Replacement in Body Rear End.
  2. Disconnect the electrical connector (2).
  3. Disconnect the coaxial cable (1).
  4. Remove the 3 mounting fasteners (5).
  5. Remove the bracket assembly (4).
  6. Remove the fasteners from the module to the mounting bracket.
  7. If you are replacing the brackets, remove the J-nuts from the brackets.
  8. Remove the module (3) from the bracket.

Installation Procedure


    Object Number: 642475  Size: SH

    Important: Use the following procedure if you are replacing the brackets or if you are installing new brackets.

  1. Install the module (3) to the bracket assembly.
  2. Install the 2 J-nuts to the upper bracket.
  3. Install the 2 J-nuts to the lower module bracket.
  4. Install the upper and lower brackets to the module (3) with the 2 fasteners on each bracket.
  5. Align the bracket assembly (4) to the mounting points on the right inner wheel housing.
  6. 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.

  7. Install the fasteners (5) in order to secure the module assembly to the right inner wheel housing.
  8. Tighten
    Tighten the fasteners to 10 N·m (89 lb in).

  9. Connect the electrical connector (2).
  10. Connect the coaxial cable (1).
  11. Install the rear compartment trim. Refer to Rear Compartment Trim Panel Replacement in Body Rear End.