Intake Manifold Installation

WARNING: This page is about a different variant/trim than selected.

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.

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

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Fig 2: View Of Intake Manifold & Engine

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Fig 3: Locating Fuel Rail Stop Bracket & Intake Manifold Bolts

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Apply threadlock 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 .
Install the fuel rail stop bracket (712).

Fig 4: Identifying Intake Manifold Bolt Tightening Sequence

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NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the manifold bolts.
Tighten:
1. Tighten intake manifold bolts a first pass in sequence to 5 N.m (44 lb in).
2. Tighten intake manifold bolts a final pass in sequence to 10 N.m (89 lb in).

Fig 5: Installing/Removing Knock Sensor Wire Harness Connector Onto Fuel Rail Stop Bracket

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Install the knock sensor wire harness connector (1) onto the fuel rail stop bracket (712).

Fig 6: Locating Fuel Rail & Injectors

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

Fig 7: Manifold Absolute Pressure (MAP) Sensor

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Fig 8: View Of Positive Crankcase Ventilation (PCV) Pipe - Dirty Air Hose

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Install the positive crankcase ventilation (PCV) pipe - dirty air (716) to the valley cover and intake manifold.