1. Install the relief valve O-ring to the engine front cover.
2. Lubricate the O-ring with engine oil.
3. Apply a 2 -3 mm wide and 0.5-1.5 mm high bead o f GM P/N 12378521 (Canadian P/N 88901148) sealant to theย ย ย ย ย mating surfaces o f the engine front cover.
4. Install the engine front cover.
NOTE: Refer to Fastener Notice.
5. Install the engine front cover bolts.
Tighten: Tighten the engine front cover bolts to 25 N.m (18 lb ft).
6. Install a new O-ring to the crankshaft position sensor spacer.
7. Lubricate the O-ring with engine oil.
8. Install the crankshaft position sensor spacer.
9. Install the crankshaft position sensor spacer bolts.
Tighten: Tighten the crankshaft position sensor spacer bolts to 10 N.m (89 lb in).
10. Install a new O-ring to the crankshaft position sensor.
11. Lubricate the O-ring with engine oil.
12. Install the crankshaft position sensor.
13. Install the crankshaft position sensor bolt.
Tighten: Tighten the crankshaft position sensor bolt to 10 N.m (89 lb in).