Installation Procedure

Important:  Apply sealant GM P/N 12346286 (Canadian P/N 10953472) or equivalent at the cylinder head to lower intake manifold joint.

1. Apply sealant at the cylinder head to lower intake manifold joint at the rear of the lower intake manifold (1).
   Fig 1: Installing Left Valve Rocker Arm Cover

   Courtesy of GENERAL MOTORS CORP.
2. Apply sealant at the cylinder head to lower intake manifold joint at the front of the lower intake manifold (1).
3. Install a new left valve rocker arm cover gasket.
   Fig 2: Applying sealant To Lower Intake Manifold Joint At Front Of Lower Intake Manifold

   Courtesy of GENERAL MOTORS CORP.
4. Install the left valve rocker arm cover.
   NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
5. Install the left valve rocker arm cover bolts.

   Tighten 

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

6. Install the PCV valve to the left valve rocker arm cover.
7. Install the thermostat bypass pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT in Engine Cooling.
8. Install the left spark plug wires. Refer to SPARK PLUGS in Engine Performance - Removal and Installation.
9. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
10. Inspect for leaks.
    Fig 3: Installing Left Valve Rocker Arm Cover

    Courtesy of GENERAL MOTORS CORP.