Envoy 4WD V8-5.3L VIN M (2005)
9. Remove the oil pump bolts.
10. Important: Do not allow dirt or debris to enter the oil pump assembly, cap end as necessary.
Remove the oil pump.
11. Clean and inspect the oil pump.
Installation Procedure
1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump.
2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.
3. Notice: Refer to Fastener Notice in Service Precautions.
Install the oil pump bolts.
Tighten the bolts to 25 Nm (18 ft. lbs.).
4. Install the crankshaft oil deflector and nuts until snug.
