GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • J 42492-A (KM-421-A) Timing Belt Adjuster
    • J 45059 Angle Meter
    • KM-470-B Angular Torque Gage

Removal Procedure

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


    Object Number: 1371852  Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the intake air temperature (IAT) sensor connector.
  3. Disconnect the air intake tube from the throttle body.
  4. Disconnect the breather tube from the valve cover.

  5. Object Number: 1371859  Size: SH
  6. Remove the air filter housing bolts.
  7. Remove the air filter housing.
  8. Remove the right front wheel. Refer to Tire and Wheel Removal and Installation.
  9. Remove the right front splash shield.

  10. Object Number: 1371872  Size: SH
  11. Remove the accessory drive belt.
  12. Remove the crankshaft pulley bolt.
  13. Remove the crankshaft pulley.

  14. Object Number: 1371903  Size: SH
  15. Remove the upper front timing belt cover bolts.
  16. Remove the upper front timing belt cover.
  17. Remove the lower front timing belt cover bolts.
  18. Remove the lower front timing belt cover.
  19. Remove the power steering pump mounting bolts, if equipped.
  20. Install the crankshaft pulley bolt.

  21. Object Number: 1371900  Size: SH
  22. Using the crankshaft pulley bolt, rotate the crankshaft clockwise until the timing mark on the crankshaft gear is aligned with the notch at the bottom of the rear timing belt cover.

  23. Object Number: 1371883  Size: SH
  24. Slightly loosen the coolant pump retaining bolts.
  25. Using the J 42492-A  (1), rotate the coolant pump counterclockwise to release the tension on the timing belt.

  26. Object Number: 1371907  Size: SH

    Note: Remove the timing belt behind the power steering pump.

  27. Remove the timing belt.

Installation Procedure


    Object Number: 1371900  Size: SH
  1. Align the timing mark on the crankshaft gear to the notch on the bottom of the rear timing belt cover.

  2. Object Number: 1371882  Size: SH
  3. Align the timing marks on the camshaft gears.
  4. Install the timing belt.

  5. Object Number: 1371883  Size: SH
  6. Rotate the coolant pump clockwise using the J 42492-A  (1).

  7. Object Number: 1371904  Size: SH
  8. Rotate the coolant pump clockwise until the adjust arm pointer of the timing belt automatic tensioner is aligned to the notch in the timing belt automatic tensioner bracket.

  9. Object Number: 1371906  Size: SH
  10. Tighten the coolant pump retaining bolts.
  11. Rotate the crankshaft 2 full turns clockwise using the crankshaft pulley bolt.
  12. Loosen the coolant pump retaining bolts.
  13. Rotate the coolant pump until the adjust arm pointer of the timing belt automatic tensioner is aligned with the pointer on the timing belt automatic tensioner bracket.
  14. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1371905  Size: SH
  15. Tighten the coolant pump retaining bolts to 10 N·m (89 lb in).

  16. Object Number: 1371903  Size: SH
  17. Remove the crankshaft pulley bolt.
  18. Install the upper and lower front timing belt cover.
  19. Install the upper and lower front timing belt cover bolts and tighten to 10 N·m (89 lb in).

  20. Object Number: 1371872  Size: SH
  21. Install the crankshaft pulley.
  22. Install the crankshaft pulley bolt. Tighten the crankshaft pulley bolt to 95 N·m (70 lb ft) using a torque wrench. Using the J 45059 or the KM-470-B , tighten the crankshaft pulley bolt 15 degrees plus.
  23. Install the accessory drive belt, if equipped.
  24. Install the right front splash shield.
  25. Install the right front wheel. Refer to Tire and Wheel Removal and Installation.

  26. Object Number: 1371852  Size: SH
  27. Install the air filter housing.
  28. Install the air filter housing bolts and tighten to 8 N·m (71 lb in).
  29. Connect the air intake tube to the throttle body.
  30. Connect the breather tube to the throttle body.
  31. Connect the IAT sensor connector.
  32. Connect the negative battery cable.