Installation Procedure

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Install new intake manifold gaskets (1) to the intake manifold.

Fig 1: Installing Intake Manifold Gaskets
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) or equivalent to the threads of the intake manifold bolts.

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.
Install the intake manifold bolts.
Tighten
1. Tighten the intake manifold bolts a first pass in sequence to 5 N.m (44 lb in).
2. Tighten the intake manifold bolts a final pass in sequence to 10 N.m (89 lb in).
  
  Fig 3: Tightening Intake Manifold Bolts In Sequence
  Courtesy of GENERAL MOTORS CORP.
Install the EVAP purge solenoid (3), isolator (1), and bolt (2) to the intake manifold.
Tighten

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

Fig 4: Installing EVAP Purge Solenoid, Isolator & Bolt
Courtesy of GENERAL MOTORS CORP.
Install the EVAP purge solenoid vent tube to the solenoid (1) and vapor pipe.

Fig 5: Installing EVAP Purge Solenoid Vent Tube
Courtesy of GENERAL MOTORS CORP.
Install the accelerator control cable bracket (2) to the intake manifold.
Install the accelerator control cable bracket bolts (1).
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.

Important: Lightly coat the MAP sensor seal with clean engine oil before installing.
Install the MAP sensor (1) to the intake manifold.

Fig 7: Installing MAP Sensor
Courtesy of GENERAL MOTORS CORP.
Install the PCV hose (with valve).

Fig 8: Installing PCV Hose
Courtesy of GENERAL MOTORS CORP.
If equipped, position a new EGR pipe gasket on the exhaust manifold.
If equipped, install the EGR pipe (with valve).
If equipped, install the following EGR pipe bolts until snug:
- Intake manifold (1)
- Cylinder head (2)
- Exhaust manifold (3)
If equipped, tighten the EGR pipe bolts.
Tighten
- Tighten the EGR valve pipe-to-intake manifold bolts to 10 N.m (89 lb in).
- Tighten the EGR valve pipe-to-cylinder head bolts to 50 N.m (37 lb ft).
- Tighten the EGR valve pipe-to-exhaust manifold bolts to 30 N.m (22 lb ft).
Route the electrical harness into position over the engine.

Fig 9: Installing EGR Pipe Bolts
Courtesy of GENERAL MOTORS CORP.
Connect the knock sensor harness electrical connector to the intake manifold.
Connect the following electrical connectors.
- MAP sensor (1)
- Knock sensor (2)
- EGR valve, if equipped
Fig 10: Connecting MAP Sensor & Knock Sensor
Courtesy of GENERAL MOTORS CORP.
Install the fuel injectors. Refer to FUEL RAIL & INJECTORS .
Install the oil fill tube. Refer to Oil Level Indicator and Tube Replacement .
Install the throttle body. Refer to THROTTLE BODY .