- Install NEW valve rocker arm cover grommets and use NEW valve rocker arm cover bolts if they are serviced
with the grommet.
Note: All gasket-mating surfaces need to be free of oil and foreign material. Use P/N 12378392 or equivalent to clean surfaces.
Note: Apply sealant GM P/N 12378521 (Canadian P/N 88901148), or equivalent, at the cylinder head to lower intake manifold joint.
- Install a new gasket to the valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
- Apply sealer GM P/N 12378521 (Canadian P/N 88901148), or equivalent to the joint surfaces (1) where the cylinder head and intake manifold meet.
- Install the valve rocker arm cover.
Caution: Refer to Fastener Caution in the Preface section.
- Install the valve rocker arm cover bolts and tighten to
10 N·m (89 lb in).
- Install the PCV fresh air tube (529).
- Install the ignition module studs (701). Tighten the ignition module studs to
25 N·m (18 lb ft).
- Install the ignition module with the ignition wires still attached (700).
- Install the ignition module nuts (702) and bolts (703). Tighten the ignition module nuts and bolts to
25 N·m (18 lb ft).
- Install the fresh air tube and wire harness retaining bolt (557). Tighten the fresh air tube and wire harness retaining bolt to
5 N·m (44 lb in).
- Install the heater outlet pipe (309).
- Install the heater outlet pipe nuts and bolt (310, 311, 318) to the upper intake manifold.
12.1. | Tighten the heater outlet pipe nuts (310) and bolt (311) to
10 N·m (89 lb in). |
12.2. | Tighten the heater outlet pipe nut (318) to
25 N·m (18 lb ft). |
12.3. | Tighten the throttle body bolts (515) to
10 N·m (89 lb in). |
- Install the heater outlet pipe hose and hose clamp to the pipe.
- Install the manifold absolute pressure (MAP) sensor (506), clip (505), and bolt (504) to the intake. Tighten the MAP sensor bolt to
10 N·m (89 lb in).