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.

1. Install NEW intake manifold-to-cylinder head gaskets (1).
   Fig 1: Installing Intake Manifold-To-Cylinder Head Gaskets

   Courtesy of GENERAL MOTORS CORP.
2. Install the intake manifold.
3. 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 .
   Fig 2: Installing Intake Manifold

   Courtesy of GENERAL MOTORS CORP.
   NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
4. Install the intake manifold bolts.

   Tighten 

   1. 4.1. Tighten intake manifold bolts first pass in sequence to 5 N.m (44 lb in).
   2. 4.2. Tighten intake manifold bolts final pass in sequence to 10 N.m (89 lb in).
   Fig 3: Installing Intake Manifold Bolts

   Courtesy of GENERAL MOTORS CORP.
5. Install the manifold absolute pressure (MAP) sensor (1), if previously removed.

   The electrical connector end of the sensor should be facing the front of the engine.

   Fig 4: Installing MAP Sensor

   Courtesy of GENERAL MOTORS CORP.
6. Install the positive crankcase ventilation (PCV) valve (2) and hose (1).
7. Install the engine coolant air bleed hose and clamp onto the throttle body.
   Fig 5: Installing PCV Valve

   Courtesy of GENERAL MOTORS CORP.
8. Install the evaporative emission (EVAP) purge solenoid (3), bolt (2), and isolator (1).

   Tighten 

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

   Fig 6: Installing EVAP Purge Solenoid

   Courtesy of GENERAL MOTORS CORP.