Rear Seat Number 1 Back Replacement TrailBlazer, Envoy, Bravada

1. Tumble the left seat back in order to gain access to the left 2 rear seat back mounting nuts.
2. Remove the left 3 rear seat back mounting nuts.
3. Return the left seat back to the upright position.
4. Remove the left 2 front seat back mounting nuts.
5. Remove the left seat back from the vehicle.
6. If removing the right seat back, perform the following:

6.1.	Remove the left seat back first.

6.2.	Tumble the right seat back in order to gain access to the right rear seat back mounting nut.

6.3.	Remove the right rear seat back mounting nut.

6.4.	Return the right seat back to the upright position.

6.5.	Remove the right front seat back mounting nut.

6.6.	Remove the navigation control processor bracket from the floor panel, if equipped. Refer to Navigation Control Processor Bracket Replacement in Cellular Communication.

6.7.	Remove the right seat back from the vehicle.

1. If the right seat back was removed, perform the following:

1.1.	Position the right seat back to the vehicle.

1.2.	Install the navigation control processor bracket, if equipped. Refer to Navigation Control Processor Bracket Replacement in Cellular Communication.

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.

1.3.	Install the right front rear seat back mounting nut.

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

1.4.	Tumble the right seat back in order to gain access to the right rear seat stud.

1.5.	Install the right rear seat back mounting nut.

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

1.6.	Return the right seat back to the upright position.

2. Position the left seat back to the vehicle.
3. Install the left 3 front seat back mounting nuts.

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

4. Tumble the left seat back in order to gain access to the left rear seat studs.
5. Install the left 2 rear seat back mounting nuts.

Tighten
Tighten the nuts to 45 N·m (33 lb ft).

6. Return the left seat back to the upright position.

Rear Seat Number 1 Back Replacement TrailBlazer, EXT, Envoy XL

1. Remove the screws from the inboard/outboard rear seat back cushion hinge covers.



2. Remove the rear seat belt anchor nut (2).
3. Remove the seat back cover and pad high enough to expose the seat back cushion mounting bolts. Refer to Rear Seat Back Cushion Cover and Pad Replacement .



4. Remove the seat back mounting bolts (2) securing the rear seat back frame to the inboard/outboard rear seat back cushion hinge assembly.
5. Remove the seat back assembly.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the seat back cushion mounting bolts (2) securing the rear seat back frame to the inboard/outboard rear seat back cushion hinge assembly.

Tighten
Tighten all rear seat back cushion mounting bolts to 25 N·m (18 lb ft).




2. Install the rear seat belt anchor nut (2).

Tighten
Tighten all rear center seat belt anchor nut to 60 N·m (44 lb ft).

3. Install the seat back cover and pad to the seat back. Refer to Rear Seat Back Cushion Cover and Pad Replacement .



4. Install the inboard/outboard rear seat back cushion hinge covers with the three screws.

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