84. Intake Manifold Installation

Intake Manifold Installation






1. 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.
^ DO NOT use intake manifold gaskets again. Install NEW intake manifold-to-cylinder head gaskets.

Install NEW intake manifold-to-cylinder head gaskets (514).





2. Install the intake manifold to the engine.





3. Apply thread-lock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the intake manifold bolts (713). Refer to Sealers, Adhesives, and Lubricants.
4. Install the fuel rail stop bracket (712).






5. Notice: Refer to Fastener Notice in Service Precautions.

Install the manifold bolts.
1. Tighten intake manifold bolts a first pass in sequence to 5 Nm (44 inch lbs.).
2. Tighten 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 (712).





7. Note the location of the fuel rail ground strap (550) on the intake manifold. The fuel rail ground strap must be installed during assembly.





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





9. Install the Positive Crankcase Ventilation (PCV) pipe - dirty air (716) to the valley cover and intake manifold.