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.
DO NOT use the old intake manifold gaskets again. Install NEW intake manifold-to-cylinder head gaskets.

Fig 1: View Of Intake Manifold-To-Cylinder Head Gasket

Courtesy of GENERAL MOTORS CORP.

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

Fig 2: View Of Intake Manifold & Bolts
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Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the intake manifold bolts. Refer to Sealers, Adhesives, and Lubricants .

NOTE: Refer to Fastener Notice .

Fig 3: Identifying Intake Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

Install the intake manifold bolts.
Tighten:
1. Tighten intake manifold bolts (1-10) a first pass in sequence to 5 N.m (44 lb in).
2. Tighten intake manifold bolts (1-10) a final pass in sequence to 10 N.m (89 lb in).
Install the manifold absolute pressure (MAP) sensor (714), if previously removed.

Fig 4: View Of MAP Sensor
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The electrical connector end of the sensor should be facing the front of the engine.
Install the positive crankcase ventilation (PCV) hose - fresh air.

Fig 5: View Of Throttle Body To Valve Rocker Arm Cover PCV Hose
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Install the PCV hose - dirty air.

Fig 6: View Of PCV Hose
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Install the engine coolant air bleed hose and clamp onto the throttle body.
Install the evaporative emission (EVAP) canister purge solenoid valve (708), bolt (710), and isolator (709).

Fig 7: View Of EVAP Purge Solenoid, Bolt & Isolator
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the solenoid valve bolt to 10 N.m (89 lb in).