Navigation Control Processor Bracket Replacement TrailBlazer EXT, Envoy XL

1. Fold and tumble the right rear seat to a cargo position.
2. Leaving the electrical connectors attached, remove the communication interface module from the vehicle communication interface module (VCIM) bracket. Refer to Communication Interface Module Replacement in Interior Trim.



3. Using a flat bladed tool, release the retaining tab (1) on the VCIM bracket.
4. Slide the VCIM bracket rearward until the retaining tabs are released from the seat bracket.
5. Remove the VCIM bracket from vehicle.



6. Slide the VCIM bracket rearward until the retaining tabs are released from the seat bracket.
7. Remove the VCIM bracket from vehicle.

1. Position the VCIM bracket to the seat bracket.
2. Slide the VCIM bracket forward until the retaining tabs become locked to the seat bracket.



3. Ensure the retaining tab (1) on the VCIM bracket is properly seated.
4. Install the communication interface module. Refer to Communication Interface Module Replacement in Interior Trim.
5. Position the right second row seat to a passenger position.

Navigation Control Processor Bracket Replacement TrailBlazer, Envoy, Rainier

1. Remove the right rear seat cushion. Refer to Rear Seat Cushion Replacement .
2. Remove the communication interface module. Refer to Communication Interface Module Replacement .



3. Using a flat bladed tool, release the retaining tab on the upper bracket.
4. Slide the upper bracket inboard until the retaining tabs are released from the processor bracket.
5. Remove the upper bracket from the processor bracket.



6. Remove the nut that retains the processor bracket to the rear seat back stud.
7. Remove the processor bracket from the vehicle.

1. Install the processor bracket to the rear seat studs.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the nut to the rear seat back stud.

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




3. Position the upper bracket to the processor bracket.
4. Slide the upper bracket outboard until all the retaining tabs are seated to the processor bracket.
5. Install the communication interface module. Refer to Communication Interface Module Replacement .
6. Install the right rear seat cushion. Refer to Rear Seat Cushion Replacement .