Chevrolet Silverado / GMC Sierra. Manual — part 2343

Fig. 117: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the left temperature door (11) to the lower HVAC module case (10).

2. Install the air temperature separator plate (5) to the lower HVAC module case (10).

3. Install the upper HVAC module case (3) to the lower HVAC module case (10).

4. Install the screws to the HVAC module assembly.

NOTE:

Refer to Fastener Notice .

IMPORTANT: For every heat stake removed ensure that you install a screw.

2008 Chevrolet Silverado 1500

2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Tighten: Tighten the screws to 1.6 N.m (14 lb in).

5. Install the instrument panel. Refer to Instrument Panel Service Positioning (Without

SLT) or Instrument Panel Service Positioning (With SLT) .

DEFROSTER DOOR REPLACEMENT

Removal Procedure

Fig. 118: Heat Stakes
Courtesy of GENERAL MOTORS CORP.

1. Remove the instrument panel to the service position. Refer to Instrument Panel Service

Positioning (Without SLT) or Instrument Panel Service Positioning (With SLT) .

2008 Chevrolet Silverado 1500

2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

2. If equipped remove the heat stakes (1) from the HVAC module (2) with a screwdriver and a

hammer.

Fig. 119: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

3. If equipped remove the HVAC module assembly screws.

4. Separate the HVAC module assembly.

5. Remove the mode actuator screws.

6. Remove the mode actuator.

7. Remove the mode actuator cam assembly.

8. Remove the defroster door (8).

2008 Chevrolet Silverado 1500

2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado