- Install NEW valve rocker arm cover grommets and use
NEW valve rocker arm cover bolts if they are serviced with the grommet.
- Install NEW seals (540), NEW gasket (541), cover (542), and bolts (543).
Notice: Refer to Fastener Notice in the Preface section.
- Tighten the bolts in sequence.
Tighten
- Tighten the bolts a first pass to 6 N·m (53 lb in).
- Tighten the bolts a final pass to 12 N·m (106 lb in).
- Apply anti-seize compound GM P/N 21485279 to the threads of the spark plugs.
- Install the spark plugs (706).
Tighten
Tighten the spark plugs to 18 N·m (13 lb ft).
- Install the ignition coils (707) and bolts (708).
Tighten
Tighten the bolts to 12 N·m (106 lb in).
- Install the oil level indicator (429)
and NEW O-rings (441).
- Install the NEW O-rings (549 and 550), positive crankcase ventilation (PCV) valve (551) and bolt (552).
Tighten
Tighten the bolt to 12 N·m (106 lb in).
- Install the NEW O-ring (546) and cap (545).