Chevrolet Silverado / GMC Sierra. Manual — part 2785

Replacement (Regular Cab) or Headlining Trim Panel Replacement (Crew Cab) or
Headlining Trim Panel Replacement (Extended Cab) .

3. Disconnect the electrical connector from the motor/actuator.

4. Remove the motor/actuator. Refer to Sunroof Motor/Actuator Replacement (Extended

Cab) or Sunroof Motor/Actuator Replacement (Crew Cab).

5. Push the window guides rearward on the track until the guides are positioned against the

rear hard stop.

Installation Procedure

1. Install the motor/actuator. Refer to Sunroof Motor/Actuator Replacement (Extended

Cab) or Sunroof Motor/Actuator Replacement (Crew Cab).

2. Connect the electrical connector to the motor/actuator.

3. Install the headliner. Refer to Headlining Trim Panel Replacement (Regular Cab) or

Headlining Trim Panel Replacement (Crew Cab) or Headlining Trim Panel
Replacement (Extended Cab) .

4. Perform the Initialization/Teach Procedure. Refer to Sunroof Motor/Actuator

Initialization/Teach Process (Extended Cab New Motor) or Sunroof Motor/Actuator
Initialization/Teach Process (Extended Cab Existing Motor) or Sunroof
Motor/Actuator Initialization/Teach Process (Crew Cab Existing Motor) or Sunroof
Motor/Actuator Initialization/Teach Process (Crew Cab New Motor).

5. Verify the operation of the sunroof.

SUNROOF TRACK TIMING/SYNCHRONIZATION (CREW CAB)

Removal Procedure

1. Place the module in the closed/flush position.

2. Remove the sunroof window. Sunroof Window Replacement (Extended Cab) or

Sunroof Window Replacement (Crew Cab).

3. It is only necessary to lower the headliner. Only do those step in headliner replacement that

will lower the headliner enough to gain access to the part. Refer to Headlining Trim Panel
Replacement (Regular Cab) or Headlining Trim Panel Replacement (Crew Cab) or
Headlining Trim Panel Replacement (Extended Cab) .

4. Disconnect the electrical connector from the motor/actuator.

5. Remove the motor/actuator. Refer to Sunroof Motor/Actuator Replacement (Extended

Cab) or Sunroof Motor/Actuator Replacement (Crew Cab).

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Sunroof - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 50: View Of Cam Assembly, Timing Hole & Lifter Arm
Courtesy of GENERAL MOTORS CORP.

6. Push the cam assembly (2) forward until the timing hole (3) in the cam is aligned with the

timing hole (4) in the lifter arm (1).

2008 Chevrolet Silverado 1500

2008 ACCESSORIES & EQUIPMENT Sunroof - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado