82. 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 the 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 (500).
3. Apply a 5 mm (0.20 inch) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the intake manifold bolts (512). Refer to Sealers, Adhesives, and Lubricants.
4. Install the intake manifold bolts (512) and fuel rail stop brackets (712).





5. Notice: Refer to Fastener Notice.

Tighten the intake manifold bolts.
1. Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 Nm (44 inch lbs.).
2. Tighten the intake manifold bolts (1-10) a final pass in sequence to 10 Nm (89 inch lbs.).





6. Lubricate the manifold absolute pressure (MAP) sensor grommet (715) with clean engine oil.
7. Install the MAP sensor (714) and grommet (715).





8. Install the positive crankcase ventilation (PCV) - dirty air hose (716).





9. Install the evaporative emission (EVAP) valve (730), bracket (741), and bolt (742).
^ Tighten the bolt to 50 Nm (37 ft. lbs.).
10. Install the EVAP tubes (729 and 735).
11. Install the fuel rail.