For 1990-2009 cars only
- Install NEW intake manifold-to-cylinder head gaskets (514).
- Install the intake manifold (500).
- Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the intake manifold bolts (512). Refer to Adhesives, Fluids, Lubricants, and Sealers.
- Install the intake manifold bolts.
- Install the fuel rail. Refer to Fuel Rail and Injectors Installation.
- Lubricate the manifold absolute pressure (MAP) sensor grommet (715) with clean engine oil.
- Install the grommet onto the MAP sensor (714).
- Install the MAP sensor and retainer (736).
- Install the positive crankcase ventilation (PCV) hose - dirty air (716).
Note:
• 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.
Caution: Refer to Fastener Caution in the Preface section.
| 4.1. | Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 N·m (44 lb in). |
| 4.2. | Tighten the intake manifold bolts (1-10) a final pass in sequence to 10 N·m (89 lb in). |
