Tools Required

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

J 36660-A Torque Angle Meter

Install the oil pump drive spacer into the oil pump so that the drive flat engages the pump rotor.
Position the oil pump on the crankshaft.
Install the retaining bolts.
CAUTION: Refer to FASTENER NOTICE in Cautions and Notices.
Apply upward pressure on the pump while tightening the three retaining bolts. Tighten the bolts in the sequence (1, 2, 3) shown.
1. 4.1. First Pass
  Tighten
  
  Tighten the oil pump mounting bolts in sequence to 10 N.m (89 in lbs).
2. 4.2. Final Pass
  Tighten
  
  Tighten the oil pump mounting bolts in sequence an additional 35 degrees using the J 36660-A.
Fig 1: Installing Oil Pump
Courtesy of GENERAL MOTORS CORP.