Chevrolet Silverado / GMC Sierra. Service manual — part 33

Fig. 75: Control Port Injector Module
Courtesy of GENERAL MOTORS CORP.

28. Connect the control port injector module (1).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 76: View Of A/C Pressure Switch & Compressor Clutch Connectors
Courtesy of GENERAL MOTORS CORP.

29. Connect the following electrical connectors:

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

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

30. Install the fuel pipes/hoses. Refer to Fuel Hose/Pipes Replacement - Engine

Compartment .

LOWER INTAKE MANIFOLD REPLACEMENT

Removal Procedure

IMPORTANT:

The intake manifold may be removed as an assembly. Do not
remove the specific intake manifold components unless

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or

Cooling System Draining and Filling (Static Fill) .

2. Remove the fuel pipes/hoses. Refer to Fuel Hose/Pipes Replacement - Engine

Compartment .

3. Remove the ignition coil assembly. Refer to Ignition Coil Replacement .

4. Remove the evaporative emission (EVAP) canister tube. Refer to Evaporative Emission

Hoses/Pipes Replacement - Engine .

component service is required.

It is not necessary to remove the upper intake manifold in
order to remove the lower intake manifold.

Do not allow dirt or debris to enter the fuel system. Ensure
that the ends of the fuel system are properly sealed.

Do not disassemble the central sequential fuel injection (SFI)
unit, unless service is required.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 77: Heater Hose Clamp
Courtesy of GENERAL MOTORS CORP.

5. Remove the heater hose clamp (1).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado