GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 136-NP4 🢒 Transfer Case Shift Control Module Replacement

Removal Procedure

    Object Number: 668177 Size: SH
  1. Remove the parking brake assembly mounting bolts only and lay the parking brake assembly aside. Refer to Parking Brake Lever Pedal Assembly Replacement in Parking Brake.

    2. Object Number: 314660 Size: SH
  2. Remove the lower dash panel. Refer to Cowl Side Trim Panel Replacement in Interior Trim.

    3. Object Number: 422418 Size: SH
  3. Remove the electrical connectors from the control module.
  4. Remove the mounting screws for the control module.
  5. Remove the control module from the mounting bracket.

Installation Procedure

    Object Number: 422418 Size: SH
  1. Install the control module in the mounting bracket.

    2. 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.

  2. Install the mounting screws for the control module.

    3. Tighten
    Tighten the mounting screws to 6 N·m (53 lb in).

  3. Install the electrical connectors in the control module.

    4. Object Number: 314660 Size: SH
  4. Install the lower dash panel. Refer to Cowl Side Trim Panel Replacement in Interior Trim.

    5. Object Number: 668177 Size: SH
  5. Install the parking brake assembly. Refer to Parking Brake Lever Pedal Assembly Replacement in Parking Brake.