GM Service Manual Online
For 1990-2009 cars only

Driver or Passenger Seat Shoulder Belt Guide Adjuster Replacement Regular Cab

Removal Procedure


    Object Number: 1339854  Size: SH
  1. Open the front seat belt upper guide shoulder bolt trim cover.
  2. Remove the front seat belt upper guide shoulder bolt.
  3. Remove the knob (2) from the front seat belt shoulder adjuster (1).
  4. Remove the body rear corner upper trim panel (3). Refer to Body Side Upper Trim Panel Replacement .
  5. Remove the 2 bolts securing the adjuster to the vehicle.
  6. Remove the front seat belt shoulder adjuster from the vehicle.

Installation Procedure


    Object Number: 1339854  Size: SH

    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.

  1. Install the 2 bolts securing the front seat belt shoulder adjuster (1) to the vehicle.
  2. Tighten
    Tighten the front seat belt shoulder adjuster bolts to 52.5 N·m (39 lb ft).

  3. Install the body rear corner upper trim panel (3). Refer to Body Side Upper Trim Panel Replacement .
  4. Install the knob (2) on the front seat belt shoulder adjuster (1).
  5. Install the front seat belt upper guide with the bolt. Ensure that the seat belt webbing is not twisted.
  6. Tighten
    Tighten the front seat belt upper guide bolt to 52.5 N·m (39 lb ft).

  7. Install the front seat belt upper guide shoulder bolt trim cover.

Driver or Passenger Seat Shoulder Belt Guide Adjuster Replacement Extended Cab

Removal Procedure

  1. Remove the knob (2) from the front seat belt shoulder adjuster (1).

  2. Object Number: 1339857  Size: SH
  3. Open the front seat belt upper guide shoulder bolt trim cover.
  4. Remove the front seat belt upper guide shoulder bolt.
  5. Remove the rear side access door upper trim panel (3).
  6. Remove the 2 bolts securing the adjuster to the vehicle.
  7. Remove the front seat belt shoulder adjuster from the vehicle.

Installation Procedure


    Object Number: 1339857  Size: SH

    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.

  1. Install the 2 bolts securing the front seat belt shoulder adjuster (1) to the vehicle.
  2. Tighten
    Tighten the front seat belt shoulder adjuster bolts to 52.5 N·m (39 lb ft).

  3. Install the rear side access door upper trim panel (3).
  4. Install the front seat belt upper guide with the bolt. Ensure that the seat belt webbing is not twisted.
  5. Tighten
    Tighten the front seat belt upper guide bolt to 52.5 N·m (39 lb ft).

  6. Install the front seat belt upper guide shoulder bolt trim cover.
  7. Install the knob (2) on the front seat belt shoulder adjuster (1).

Driver or Passenger Seat Shoulder Belt Guide Adjuster Replacement Crew Cab

Removal Procedure


    Object Number: 1339865  Size: SH
  1. Open the front seat belt upper guide shoulder bolt trim cover.
  2. Remove the front seat belt upper guide shoulder bolt.
  3. Remove the knob (2) from the front seat belt shoulder adjuster (3).
  4. Remove the upper center pillar trim panel (1). Refer to Center Pillar Upper Trim Panel Replacement .
  5. Remove the 2 bolts securing the adjuster to the vehicle.
  6. Remove the front seat belt shoulder adjuster from the vehicle.

Installation Procedure


    Object Number: 1339865  Size: SH

    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.

  1. Install the 2 bolts securing the front seat belt shoulder adjuster (3) to the vehicle.
  2. Tighten
    Tighten the front seat belt shoulder adjuster bolts to 52.5 N·m (39 lb ft).

  3. Install the upper center pillar trim panel (1). Refer to Center Pillar Upper Trim Panel Replacement .
  4. Install the knob (2) on the front seat belt shoulder adjuster (3).
  5. Install the front seat belt upper guide with the bolt. Ensure that the seat belt webbing is not twisted.
  6. Tighten
    Tighten the front seat belt upper guide bolt to 52.5 N·m (39 lb ft).

  7. Install the front seat belt upper guide shoulder bolt trim cover.