GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Restraints 🢒 Seat Belts 🢒 Front Seat Center Belt Replacement

Removal Procedure

    Object Number: 390149 Size: SH

    Caution: To help avoid personal injury from unrepaired crash damage to a restraint system, perform the seat belt check for each seat belt system. Replace the seat belt system if there is any doubt about the condition of system components.

    Notice: To prevent possible seat belt damage, refer to the following items before servicing or replacing lap and shoulder belts, including single loop belt systems:

       • Lap and shoulder belts will be serviced as follows:
          - Replace only the part in question.
          - Do not intermix standard and deluxe belts on front or rear seats.
          - All attachment hardware must be replaced, not reused.
       • Keep sharp edges and damaging objects away from belts.
       • Avoid bending or damaging any portion of the belt buckle or latch plate.
       • Do not bleach or dye belt or strap webbing. Clean with a mild soap solution and water.
       • When installing lap or shoulder belt anchor bolts, start the bolts by hand to ensure that the bolts are threaded straight.
       • Do not attempt repairs on lap or shoulder belt retractor mechanisms to lap belt retractor covers. Replace defective assemblies with new service replacement parts.
       • Do not attempt to remove the seat belt retractor cover. The cover and the long rivet securing the cover to the retractor are not available as service replacement parts.

  1. Remove the center front seat belt latch bolt.

    2. Remove the seat belt latch assembly from the vehicle.


    Object Number: 390150 Size: SH
  2. Remove the center front seat belt buckle bolt.
  3. Remove the buckle assembly from the seat.

Installation Procedure
  1. Install the seat belt buckle assembly to the center front seat.

    2. Object Number: 390150 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.

  2. Install the seat belt buckle bolt.

    3. Tighten
    Tighten the bolt to 53 N·m (39 lb ft).

  3. Install the seat belt latch assembly to the center front seat.

    4. Object Number: 390149 Size: SH
  4. Install the seat belt latch bolt.

    5. Tighten
    Tighten the bolt to 53 N·m (39 lb ft)