Sierra 1500 2WD V6-4.3L (2008)
Intake Manifold: Service and Repair
Lower Intake Manifold Replacement
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 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.
1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) (See: Cooling System/Service and Repair)Cooling System
Draining and Filling (Static Fill) (See: Cooling System/Service and Repair) .
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 .
5. Remove the heater hose clamp (1).
6. Open the heater outlet hose clamp and remove the hose from the intake manifold.
