GM Service Manual Online
For 1990-2009 cars only

    Object Number: 793901  Size: SH
  1. Install the relief valve O-ring to the engine front cover.
  2. Lubricate the O-ring with engine oil.

  3. Object Number: 663817  Size: SH
  4. Apply a 2-3 mm wide and 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N 88901148) sealant to the mating surfaces of the engine front cover.

  5. Object Number: 1336120  Size: SH
  6. Install the engine front cover.
  7. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  8. Install the engine front cover bolts.
  9. Tighten
    Tighten the engine front cover bolts to 25 N·m (18 lb ft).


    Object Number: 1336119  Size: SH
  10. Install a new O-ring to the crankshaft position sensor spacer.
  11. Lubricate the O-ring with engine oil.
  12. Install the crankshaft position sensor spacer.
  13. Install the crankshaft position sensor spacer bolts.
  14. Tighten
    Tighten the crankshaft position sensor spacer bolts to 10 N·m (89 lb in).

  15. Install a new O-ring to the crankshaft position sensor.
  16. Lubricate the O-ring with engine oil.
  17. Install the crankshaft position sensor.
  18. Install the crankshaft position sensor bolt.
  19. Tighten
    Tighten the crankshaft position sensor bolt to 10 N·m (89 lb in).