GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Roof 🢒 Sunroof 🢒 Sunroof Wiring Harness Replacement

Removal Procedure

    Important: Note the following locations:

       • The position of the wire harness routing
       • The location of the tie-straps that secure the wire harness to the drive cable tube and the sunroof module.

  1. Position the sunshade in the full forward position.
  2. Remove the headliner. Refer to Headlining Trim Panel Replacement.
  3. Remove the rear shelf. Refer to Rear Window Shelf Trim Panel Replacement.

    4. Object Number: 647217 Size: SH
  4. Cut the nylon tie straps on the express module and the drive cable tube.
  5. Disconnect the electrical connectors from the following components:
    6. • The sunroof control switch
    • The sunroof control module
    • The sunroof actuator
    • The sunroof opening position switch
  6. Remove the tape holding the wire harness to the sunroof module.
  7. Remove the wire harness from the sunroof.

Installation Procedure

    Object Number: 647217 Size: SH
  1. Align the wire harness to the sunroof module.
  2. Connect the electrical connectors to the following components:
    3. • The sunroof control switch
    • The sunroof control module
    • The sunroof actuator
    • The sunroof opening position switch
  3. Install new nylon tie straps to the sunroof control module and the drive cable tube.
  4. Install new tape to hold the wire harness to the module.
  5. Inspect for proper operation of the sunroof.
  6. Install the rear shelf. Refer to Rear Window Shelf Trim Panel Replacement.
  7. Install the headliner. Refer to Headlining Trim Panel Replacement.