C 1500 Yukon 2WD V8-5.3L VIN Z Flex Fuel (2003)
9. Remove the oil pump bolts.
Important: Do not allow dirt or debris to enter the oil pump assembly, cap end as necessary.
10. Remove the oil pump.
11. If required, 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.
Notice:
Refer to Fastener Notice in Service Precautions.
See: Service Precautions/Vehicle Damage Warnings/Fastener Notice
3. Install the oil pump bolts.
Tighten the bolts to 25 Nm (18 ft. lbs.).