GM Service Manual Online
For 1990-2009 cars only

Door Wiring Harness Replacement Cargo Door

Removal Procedure

  1. Remove the trim panel. Refer to Rear Door Trim Panel Replacement .

  2. Object Number: 577898  Size: SH
  3. Remove the wiring contact screws.
  4. Disconnect the door wiring contact connector(s).
  5. Disconnect the window defogger wiring connectors.
  6. Disconnect the power door lock actuator connector (RHS only).
  7. Disconnect the door ajar switch connectors.
  8. Disconnect the key switch connector (RHS only).
  9. Remove the wiring harness clips.
  10. Remove the wiring harness from the door.

Installation Procedure


    Object Number: 577898  Size: SH
  1. Install the wiring harness to the door.
  2. Connect the key switch connector (RHS only).
  3. Connect the door ajar switch connectors.
  4. Install the wiring harness clips.
  5. Connect the power door lock actuator connector (RHS only).
  6. Connect the window defogger wiring connectors.
  7. Connect the door wiring contact connector(s).
  8. 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.

  9. Install the door wiring contact screws.
  10. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  11. Install the trim panel. Refer to Rear Door Trim Panel Replacement .

Door Wiring Harness Replacement Liftgate

Removal Procedure

  1. Remove the liftgate trim panel. Refer to Liftgate Trim Panel Replacement .

  2. Object Number: 577905  Size: SH
  3. Disconnect the window defogger wiring connectors.
  4. Disconnect the key switch connector.
  5. Disconnect the window ajar switch connector.
  6. Disconnect the wiper module connector.
  7. Disconnect the door lock actuator connector.
  8. Disconnect the door ajar switch connector(s).
  9. Remove the wiring harness clips.
  10. Pull back the rubber boot on door side grommet to expose plastic snap ring
  11. Release the snap ring locks.
  12. Remove the wiring harness from door.

Installation Procedure

  1. Install the harness to door.
  2. Engage the snap ring locks
  3. Push on rubber boot over plastic snap ring connector.

  4. Object Number: 577905  Size: SH
  5. Install the wiring harness clips.
  6. Connect the door ajar switch connector(s).
  7. Connect the door lock actuator connector.
  8. Connect the wiper module connector.
  9. Connect the window ajar switch connector.
  10. Connect the key switch connector.
  11. Connect the window defogger wiring connectors.
  12. Install the liftgate trim panel. Refer to Liftgate Trim Panel Replacement .