Chevrolet Silverado / GMC Sierra. Service manual — part 2328

Courtesy of GENERAL MOTORS CORP.

6. Install the evaporator tube nut to the evaporator.

Tighten: Tighten the nut to 16 N.m (12 lb ft).

7. Install the surge tank hold down nut and bolt and position aside.

8. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

9. Install the upper radiator air baffle and deflector. Refer to Radiator Air Upper Baffle

and Deflector Replacement .

10. Evacuate and recharge the system. Refer to Refrigerant Recovery and Recharging.

11. Leak test the fittings of the components using the J 39400-A . See Special Tools.

EXPANSION (ORIFICE) TUBE REPLACEMENT

Fig. 59: View Of Orifice Tube Assembly & Components
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedure

1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.

2. Remove the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct

Replacement .

3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .

Orifice Tube Fitting

2008 Chevrolet Silverado 1500

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

Silverado

AIR CONDITIONING (A/C) LOW PRESSURE SWITCH REPLACEMENT (NON-HP2)

Removal Procedure

1. Disconnect the electrical connector from the A/C low pressure switch.

1

Tip: Loosen orifice tub fitting and separate the pressure line to access the
orifice.

Tighten: 9 N.m (80 lb in)

NOTE:

Refer to Fastener Notice .

2

O-ring Seal
Tip: Remove and discard O-ring. Refer to O-Ring Replacement.

3

Orifice Tube Assembly
Tip: Use J 26549-E to remove orifice tube. See Special Tools.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 60: A/C Low Pressure Switch
Courtesy of GENERAL MOTORS CORP.

2. Remove the A/C low pressure switch from the accumulator.

3. Remove the O-ring and discard.

Installation Procedure

2008 Chevrolet Silverado 1500

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

Silverado

1. Install the new O-ring seal to the switch. Refer to O-Ring Replacement.

Fig. 61: A/C Low Pressure Switch
Courtesy of GENERAL MOTORS CORP.

2. Install the A/C low pressure switch to the accumulator.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Silverado