Important: All gasket surfaces should be free of oil or other foreign material during assembly.
- Lubricate the O-ring seals (537) with clean engine oil.
 
- Install the O-ring seals (537) to the cover.
 
Notice: Refer to Fastener Notice in the Preface section.
- Install the cover (555), gasket (556), and bolts (506). 
 
Tighten
Tighten the cover bolts to 25 N·m (18 lb ft).
- Apply sealant GM P/N 12346004 (Canadian P/N 10953480), or equivalent, to the threads
of the sensor. 
 
- Install the oil pressure sensor (706) and sealing washer (707). 
 
Tighten
Tighten the sensor to 35 N·m (26 lb ft).