GM Service Manual Online
For 1990-2009 cars only

    Object Number: 11438  Size: SH
  1. Remove the nuts (6) and the crankshaft oil deflector (2).
  2. Remove the oil pump bolt  (1).
  3. Remove the oil pump (3), the oil pump driveshaft (5), and the oil pump driveshaft retainer (4).
  4. Separate the oil pump (3), the oil pump driveshaft (5), and the oil pump driveshaft retainer (4).
  5. Important: Always install a NEW oil pump driveshaft retainer during assembly.

  6. Discard the oil pump driveshaft retainer.

  7. Object Number: 182852  Size: SH
  8. Inspect the oil pump locator pins for damage. Replace the pins if required.

    Object Number: 11438  Size: SH
  1. Remove the nuts (6) and the crankshaft oil deflector (2).
  2. Remove the oil pump bolt (1).
  3. Remove the oil pump (3), the oil pump driveshaft (5), and the oil pump driveshaft retainer (4).
  4. Separate the oil pump (3), the oil pump driveshaft (5), and the oil pump driveshaft retainer (4).
  5. Important: Always install a NEW oil pump driveshaft retainer during assembly.

  6. Discard the oil pump driveshaft retainer.

  7. Object Number: 182852  Size: SH
  8. Inspect the pins (oil pump locator) for damage, replace the pins if required.