Chevrolet Silverado / GMC Sierra. Service manual — part 34

Fig. 78: Intake Manifold Hose
Courtesy of GENERAL MOTORS CORP.

6. Open the heater outlet hose clamp and remove the hose from the intake manifold.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 79: Heater Inlet Hose At Water Pump
Courtesy of GENERAL MOTORS CORP.

7. Open the heater inlet hose clamp and remove the hose from the water pump.

8. Reposition the heater inlet and outlet hoses.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 80: View Of Engine Wiring Harness & Components
Courtesy of GENERAL MOTORS CORP.

9. Disconnect the engine wiring harness electrical connector (2) from the throttle body.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 81: View Of A/C Pressure Switch & Compressor Clutch Connectors
Courtesy of GENERAL MOTORS CORP.

10. Disconnect the following electrical connectors:

The A/C pressure switch (1), if equipped

The air conditioning (A/C) compressor clutch (2), if equipped

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado