GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 45059 Torque Angle Meter

Removal Procedure


    Object Number: 97731  Size: SH
  1. Remove the right engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .
  2. Remove the drive belt tensioner assembly. Refer to Drive Belt Tensioner Replacement .
  3. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  4. Remove the crankshaft sensor shield.
  5. Remove the crankshaft sensor.
  6. Remove the oil pan to engine front cover bolts.

  7. Object Number: 42228  Size: SH
  8. Remove the engine front cover attaching bolts.
  9. Remove the engine front cover.
  10. Inspect the timing chain for overall in and out movement. Movement should not exceed 25 mm (1 in).
  11. Inspect the timing sprockets for wear.
  12. Clean the gasket mating surfaces at the cylinder block.
  13. If the oil pan gasket is excessively swollen, the oil pan must be removed and the gasket replaced.
  14. Clean and inspect the engine front cover. Refer to Engine Front Cover Cleaning and Inspection .

Installation Procedure


    Object Number: 97758  Size: SH
  1. Install the engine front cover gasket .

  2. Object Number: 42228  Size: SH
  3. Install the engine front cover.
  4. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the bolt threads.
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the engine front cover attaching bolts.
  7. Tighten
    Tighten the engine front cover bolts to 20 N·m (15 lb ft). Use the J 45059 in order to rotate the bolts an additional 40 degrees.

  8. Install the oil pan to the engine front cover bolts.
  9. Tighten
    Tighten the oil pan bolts to 14 N·m (125 lb in).

  10. Install the drive belt tensioner assembly. Refer to Drive Belt Tensioner Replacement .

  11. Object Number: 97731  Size: SH

    Important: Do not adjust the crankshaft sensor.

  12. Install the crankshaft sensor.
  13. Install the crankshaft sensor shield.
  14. Install the crankshaft balancer and bolt. Refer to Crankshaft Balancer Replacement .
  15. Install the right engine mount bracket. Refer to Engine Mount Bracket Replacement - Right Side .