GM 55564303
Intake Manifold

Start your Intake Manifold replacement by disconnecting the negative Battery Cable. First lower the fuel pressure before removing the air cleaner assembly. Start by disconnecting the Intake Manifold power steering pressure pipe clamp followed by removing sensor and actuator connectors from their mounting points and pulling the engine wiring harness away. You must first separate the Fuel Rail's fuel line and subsequently disconnect the etc coolant inlet/outlet hoses before moving them to the side. Free the pcv hose from both the cylinder head cover and the etc unit. Disassemble the electric throttle controller (ETC) while simultaneously taking out the Intake Manifold with its gasket. New gaskets should be used during installation and bolts securing the Intake Manifold should be tightened to 20 nm (14.7 lb ft) and the lower bracket bolt should receive 8 nm (70.8 lb in) torque. First reassemble the electric throttle controller (ETC) alongside the cylinder head cover before attaching the pcv hose to the etc and mounting the etc coolant inlet/outlet hoses. Install the fuel line to the Fuel Rail while connecting each sensor and actuator connector that includes the a/c pressure sensor (ACP) and cam position solenoid valve in addition to the electric throttle controller (ETC) and manifold air pressure (MAP) sensor and evap solenoid valve and injectors. The power steering pressure pipe gets attached to the Intake Manifold while reinstalling the air cleaner assembly with the battery negative cable connection completed.

Disconnect the battery negative cable.

Remove the alternator adjusting bracket bolt, the alternator adjusting bracket, the intake manifold support bracket bolts, and the intake manifold itself along with the intake manifold gasket, cleaning the sealing surfaces afterward.