82. Intake Manifold Installation

Important: The intake manifold, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, install the intake manifold as a complete assembly.





1. Install NEW intake manifold-to-cylinder head gaskets (1).





2. Install the manifold to the engine.





3. Apply threadlock GM P/N 12345382 or equivalent to the threads of the intake manifold bolts (1).
Refer to Sealers, Adhesives, and Lubricants.

Caution: The fuel rail stop bracket must be installed onto the engine assembly. The stop bracket serves as a protective shield for the fuel rail in the event of a vehicle frontal crash. If the fuel rail stop bracket is not installed and the vehicle is involved in a frontal crash, fuel could be sprayed possibly causing a fire and personal injury from burns.

4. Install the fuel rail stop bracket (2).

Notice: Refer to Fastener Notice in Service Precautions.





5. Install the intake manifold bolts.
5.1 Tighten the intake manifold bolts a first pass in sequence to 5 Nm (44 inch lbs.).
5.2. Tighten the intake manifold bolts a final pass in sequence to 10 Nm (89 inch lbs.).





6. Install the knock sensor wire harness connector (1) onto the fuel rail stop bracket (2).





7. Install the Manifold Absolute Pressure (MAP) sensor (if previously removed).





8. Install the accelerator control cable bracket (2) and bolts (1).
- Tighten the bracket bolts to 10 Nm (89 inch lbs.).





9. Install the Positive Crankcase Ventilation (PCV) valve pipe to the right rocker cover and intake manifold.
10. Install the PCV strap and nut onto the right front vapor vent pipe stud.
- Tighten the PCV strap nut to 12 Nm (106 inch lbs.).





11. Install the PCV valve pipe to the left rocker cover.