Seat Belt Side Buckle Replacement - Rear TrailBlazer, Envoy, Bravada

1. Adjust the rear seats and seat backs to a cargo position.
2. Loosen the center seat belt anchor bolt that retains the seat belt to the seat belt buckle/anchor plate assembly.



3. Remove the left rear seat back rear mounting nut that retains the left seat back to the floor panel.
4. Remove the assembly clip that retains the seat belt buckle/anchor plate assembly to the rear seat back hinge bracket.
5. Remove the seat belt buckle and anchor plate assembly from the rear seat back hinge bracket.
6. Remove the center seat belt anchor bolt from the seat belt buckle/anchor plate assembly.
7. Remove the center seat belt anchor from the seat belt buckle/anchor plate assembly.

Important: 

•	When installing the center seat belt anchor to the seat belt buckle/anchor plate assembly, ensure that the center seat belt webbing is not twisted.

•	Ensure that the center seat belt anchor is properly indexed between the locating tangs on the seat belt buckle/anchor plate assembly.

1. Position the center seat belt anchor to the seat belt buckle and anchor plate assembly.

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 center seat belt anchor bolt that retains the center seat belt anchor to the seat belt buckle/anchor plate assembly. Tighten the bolt finger tight.
3. Position the seat belt buckle/anchor plate assembly to the rear seat back hinge bracket.
4. Install the left rear seat back rear mounting nut that retains the left seat back to the floor panel.

Tighten

•	Tighten the rear seat back rear mounting nut to 45 N·m (33 lb ft).

•	Tighten the center seat belt anchor bolt to 50 N·m (37 lb ft).

5. Return the rear seats to the passenger position.

Seat Belt Side Buckle Replacement - Rear TrailBlazer EXT, Envoy XL

1. Remove the 3 screws securing the inboard rear seat back hinge cover.



2. Remove the seat belt side buckle nut (2).
3. Remove the seat belt side buckle (1) from the seat.

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 seat belt side buckle (1) to the seat with the seat belt anchor nut (2).

Tighten
Tighten the seat belt side buckle nut to 55 N·m (40 lb ft).




2. Install the inboard rear seat back cushion latch cover with 3 screws.

Tighten
Tighten the rear seat back cushion latch cover screws to 2 N·m (18 lb in).