GM Service Manual Online
For 1990-2009 cars only

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1758465  Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the intake air temperature (IAT) sensor connector.

  3. Object Number: 1758476  Size: SH
  4. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.
  5. Remove the right front wheel. Refer to Tire and Wheel Removal and Installation.
  6. Remove the engine front shield at the position of right front wheel.

  7. Object Number: 1758533  Size: SH
  8. Remove the serpentine accessory drive belt. Refer to Drive Belt Replacement.
  9. Remove the crankshaft pulley.
  10. Remove the engine mount assembly. Refer to Engine Front Mount Replacement.

  11. Object Number: 1758528  Size: SH
  12. Remove the front timing belt cover bolts.
  13. Remove the front timing belt cover.

  14. Object Number: 1758598  Size: SH
  15. Rotate the crankshaft at least one full turn clockwise using the crankshaft gear bolt.
  16. Align the mark on the crankshaft gear with the notch at the bottom of the rear timing belt cover.

  17. Object Number: 1758588  Size: SH
  18. Align the camshaft gear timing marks. Use the exhaust gear mark for the exhaust gear and the intake gear mark for the intake gear, since the gears are not interchangeable.

  19. Object Number: 1758610  Size: SH
  20. Loosen the automatic tensioner bolt. To relieve the belt tension, turn the hex-key tab counterclockwise.
  21. Rotate the automatic tensioner hex-key tab clockwise until the adjust arm pointer of the timing belt automatic tensioner is aligned with the notch in the timing belt automatic tensioner bracket.

  22. Object Number: 1758598  Size: SH
  23. Tighten the automatic tensioner bolt.
  24. Rotate the crankshaft two full turns clockwise using the crankshaft gear bolt.
  25. Check the automatic tensioner pointer.
  26. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1758610  Size: SH
  27. When the adjust arm pointer of the timing belt automatic tensioner is aligned with the notch on the timing belt automatic tensioner bracket, the belt is tensioned correctly. Tighten the bolt to 25 N·m (18 lb ft).

  28. Object Number: 1758528  Size: SH
  29. Install the front timing belt cover and tighten the bolts to 6 N·m (53 lb in).

  30. Object Number: 1758524  Size: SH
  31. Install the crankshaft pulley and tighten the bolt to 23 N·m (17 lb ft).
  32. Install the engine mount assembly. Refer to Engine Front Mount Replacement.
  33. Install the serpentine accessory drive belt. Refer to Drive Belt Replacement.

  34. Object Number: 1758476  Size: SH
  35. Install the engine front shield.
  36. Install the right front wheel. Refer to Tire and Wheel Removal and Installation.
  37. Install the air cleaner assembly and tighten the housing bolts to 6 N·m (53 lb in). Refer to Air Cleaner Assembly Replacement.

  38. Object Number: 1758465  Size: SH
  39. Connect the IAT sensor connector.
  40. Connect the negative battery cable.