GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 885116  Size: SH
  1. Disconnect the shift control module electrical connectors.

  2. Object Number: 856631  Size: SH
  3. Unsnap and remove the shift control module from the bracket.

Installation Procedure


    Object Number: 856631  Size: SH
  1. If a NEW control module is being installed, program the new module. Refer to Transfer Case Shift Control Module Reprogramming .
  2. Install the shift control module to the bracket.

  3. Object Number: 885116  Size: SH
  4. Connect the shift control module electrical connectors.
  5. Start the engine and test the automatic transfer case system for proper shift operation.