For 1990-2009 cars only
- Install NEW O-rings (427) onto the oil transfer pipe (428).
- Install the pipe (428) into the block.
- Apply sealant GM P/N 12346240 (Canadian P/N 10953493), or equivalent, evenly to the block mating surface of the oil pump housing and to the inner threads of the bolt holes.
- Install the pins (425).
- Install a NEW O-ring (426).
- Install the oil pump assembly (424) and bolts (423). Align the flat surfaces of the oil pump inner rotor with the flat surfaces of the crankshaft.
- Apply sealant GM P/N 12346240 (Canadian P/N 10953493), or equivalent, to the threads of the switch (705).
- Install the oil pressure switch (705).
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the bolts to 12 N·m (106 lb in).
Tighten
Tighten the switch to 18 N·m (13 lb ft).
