GM Service Manual Online
For 1990-2009 cars only
  1. Remove the oil pick up tube and the O-ring.
  2. Important: Do not damage the crankshaft when removing the oil slinger.

  3. Remove the oil slinger from the crankshaft.
  4. Remove the idler gears with the shafts from the cylinder block.
  5. Remove the oil pump with the drive gear from the cylinder block.