Intake Manifold Installation

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

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

Courtesy of GENERAL MOTORS CORP.

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).

Fig 2: View of Intake Manifold

Courtesy of GENERAL MOTORS CORP.

Install the intake manifold.
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. Refer to Sealers, Adhesives, and Lubricants .

Fig 3: Identifying Intake Manifold Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

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

Fig 4: View Of MAP Sensor

Courtesy of GENERAL MOTORS CORP.

Install the manifold absolute pressure (MAP) sensor (714), if previously removed.
The electrical connector end of the sensor should be facing the front of the engine.

Fig 5: View Of PCV Hose

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Install the positive crankcase ventilation (PCV) hose.
Install the engine coolant air bleed hose and clamp onto the throttle body.

Fig 6: View Of EVAP Purge Solenoid, Bolt & Isolator

Courtesy of GENERAL MOTORS CORP.

Install the evaporative emission (EVAP) purge solenoid (708), bolt (710), and isolator (709).
Tighten: Tighten the solenoid bolt to 10 N.m (89 lb in).