GM Service Manual Online
For 1990-2009 cars only

Special Tools

J 45059 Angle Meter

Removal Procedure

  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .

  2. Object Number: 928314  Size: SH
  3. Remove the 3 oil pump assembly retaining bolts (1, 2, 3) identified by the larger head size.
  4. Slide the oil pump assembly off the nose of the crankshaft with the drive collar in place.
  5. Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection .

Installation Procedure


    Object Number: 1275672  Size: SH
  1. Install the oil pump drive spacer (1) into the oil pump (2) so that the drive flat engages the pump rotor.
  2. Position the oil pump on the crankshaft.
  3. Install the retaining bolts.
  4. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 928314  Size: SH
  5. Apply upward pressure on the pump while tightening the three retaining bolts. Tighten the bolts in the sequence (1, 2, 3) shown.
  6. Tighten

    1. First Pass: Tighten the oil pump mounting bolts in sequence to 10 N·m (89 lb in).
    2. Final Pass: Tighten the oil pump mounting bolts in sequence an additional 35 degrees using the J 45059 .
  7. Install the engine front cover. Refer to Engine Front Cover Replacement .