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 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.
   CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
4. 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 3: Tightening Intake Manifold Bolts In Sequence

      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 & Hose

   Courtesy of GENERAL MOTORS CORP.
8. Install the accelerator control cable bracket (2) and bolts (1), if applicable.

   Tighten 

   Tighten the accelerator control cable bracket bolts to 10 N.m (89 lb in).

   Fig 6: Installing Accelerator Control Cable Bracket & Bolts

   Courtesy of GENERAL MOTORS CORP.
9. 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 7: Installing EVAP Purge Solenoid, Bolt & Isolator

   Courtesy of GENERAL MOTORS CORP.