Chevrolet Silverado / GMC Sierra. Service manual — part 2345

Fig. 123: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the lower mode door (9) to the HVAC module assembly (10).

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

3. Install the HVAC module assembly halves.

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) .

MODE DOOR REPLACEMENT - UPPER

Removal Procedure

Fig. 124: Heat Stakes
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The upper mode door is serviced with the upper HVAC module

case.

2008 Chevrolet Silverado 1500

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

Silverado

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. Disconnect the electrical connector from the mode actuator.

3. Remove the screws from the mode actuator.

4. Remove the mode actuator from the HVAC module assembly (1).

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

hammer.

Fig. 125: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

6. If equipped remove the HVAC module assembly screws.

2008 Chevrolet Silverado 1500

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

Silverado

7. Separate the HVAC module assembly.

8. Remove the lever (7) from the upper mode door/upper HVAC module case (6).

Installation Procedure

Fig. 126: Exploded View Of HVAC Module Assembly
Courtesy of GENERAL MOTORS CORP.

1. Install the lever (7) to the upper mode door/upper HVAC module case (6).

2. Install the HVAC module assembly halves.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Silverado