Removal Procedure

WARNING: This page is about a different variant/trim than selected.

If the vehicle is a 2-wheel drive (2WD), remove the flywheel housing. Refer to Engine Flywheel Replacement (Automatic Transmission) or Engine Flywheel Replacement (Manual Transmission) .
Remove the engine front cover. Refer to Engine Front Cover Replacement .
Remove the upper oil pan. Refer to Oil Pan Replacement - Upper .
Remove the oil pump screen bolts and nuts.
Remove the oil pump screen.

Fig 1: View Of Oil Pump Pipe & Screen Assembly
Courtesy of GENERAL MOTORS CORP.
Remove and discard the oil pump screen gasket.
Block the crankshaft from turning with a wooden handle.

Fig 2: Blocking Crankshaft Using Wooden Handle
Courtesy of GENERAL MOTORS CORP.
While holding the secondary oil pump shaft with a hex driver, remove the oil pump driven gear nut.

Fig 3: Removing/Installing Secondary Oil Pump Driven Gear Nut While Holding Oil Pump Shaft
Courtesy of GENERAL MOTORS CORP.
Remove the oil pump driven gear.

Fig 4: View Of Oil Pump Driven Gear & Nut
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not damage the crankshaft reluctor. Do not remove the crankshaft reluctor to oil pump drive bolts.

Fig 5: View Of Oil Pump Drive Gear

Courtesy of GENERAL MOTORS CORP.

Remove the oil pump drive gear and crankshaft reluctor.
- Use a brass drift.
- Tap on the back as close to the center of the reluctor.
Remove the hex head and the allen head bolt in order to remove the oil pump.
Remove the oil pump.

Fig 6: View Of Oil Pump, O-Ring Seal & Bolt
Courtesy of GENERAL MOTORS CORP.
Remove the O-ring seal for the oil pump.
If required, clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .