Chevrolet Silverado / GMC Sierra. Service manual — part 2344

Installation Procedure

Fig. 120: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the defroster door (8).

2. Install the mode actuator cam assembly.

3. Install the mode actuator.

4. Install the mode actuator screws.

NOTE:

Refer to Fastener Notice .

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 HVAC module assembly halves.

6. Install the screws to the HVAC module assembly.

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

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

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

MODE DOOR REPLACEMENT - LOWER

Removal Procedure

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

Fig. 121: 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) .

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

hammer.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 122: 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 air temperature separator plate (5) from the HVAC module assembly (10).

6. Remove the lower mode door (9) from the HVAC module assembly (10).

Installation Procedure

2008 Chevrolet Silverado 1500

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

Silverado