GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Transfer Case Shift Control Module Replacement

Removal Procedure
  1. Remove the IP trim bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .

    2. Object Number: 676695 Size: SH
  2. Pull out the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly in order to disconnect the electrical connectors.
  3. Disconnect all the electrical connectors from the lamp switch, cargo lamp and 4WD shift buttons assembly.
  4. Remove the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly from the vehicle.

    5. Object Number: 676224 Size: SH
  5. Remove the electrical harness retainer from the IP support beam.
  6. Disconnect the 2 electrical connectors from the transfer case shift control module.
  7. Move the electrical harness to the left side in order to make room to turn the transfer case shift control module.

    8. Object Number: 676699 Size: SH
  8. Rotate the transfer case shift control module about 45 degrees counter clockwise while pulling out at the same time until the module is approximately 90 degrees from the original position.
  9. Pull out the module from the vehicle.

Installation Procedure
  1. Move the electrical harness to the left side in order to make room to install the transfer case shift control module.

    2. Object Number: 676699 Size: SH
  2. Install the transfer case shift control module so that the electrical connector ports are to the right or pointing towards the instrument cluster.
  3. While installing the transfer case shift control module rotate clockwise until the module is in place and the electrical connector ports are facing outwards.

    4. Object Number: 676224 Size: SH
  4. Install the electrical harness retainer to the IP support beam.
  5. Connect the 2 electrical connectors to the transfer case shift control module.

    6. Object Number: 676695 Size: SH
  6. Install the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly the vehicle.
  7. Connect all the electrical connectors to the lamp switch, cargo lamp and 4WD shift buttons assembly.
  8. Install the lamp switch, 4WD shift buttons, cargo lamp and air deflector louver assembly in place.
  9. Install the IP trim bezel. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
  10. Start the engine and test the automatic transfer case system for proper shift operation.