GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN-46788 Crankshaft fixing tool
    • EN-46789 Camshaft fixing tool
    • CH-49290 Centering fixture Subframe- Engine

For equivalent regional tools, refer to Special Tools.

Removal Procedure

  1. Protect the wings with covers.
  2. Remove the battery box. Refer to Battery Negative Cable Disconnection and Connection.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  4. Remove the front right wheel. Refer to Tire and Wheel Removal and Installation.
  5. Remove the front wheelhouse liner. Refer to Front Wheelhouse Front Liner Replacement.
  6. Remove the engine shield. Refer to Engine Shield Replacement.
  7. Install CH-49290 centring fixture to support the engine to the subframe. Take the strain off the engine bracket by adjusting the fixture.
  8. Relieve the belt tensioner and lock it. Remove the drive belt (8) for the auxiliaries.

  9. Object Number: 2018953  Size: SH
  10. Remove the crankshaft pulley. Refer to Crankshaft Balancer Removal.
  11. Note: The centre bolt of the belt pulley is not to be slackened.

  12. Remove the idler pulley centre bolt on the lower timing cover. Use, for example, 2 screwdrivers to carefully pry off from two directions.
  13. Lower the car.
  14. Remove the engine cover. Refer to Engine Cover Replacement.
  15. Remove the air cleaner casing. Refer to Air Cleaner Assembly Replacement.
  16. Remove the right hand engine mounting (10). Refer to Engine Mount Replacement - Right Side.
  17. Remove the upper and lower timing covers (16). Refer to Timing Belt Upper Front Cover Removal and Timing Belt Lower Front Cover Removal.
  18. Note: Take note of the bolt locations.

  19. Remove the crankcase ventilation pipe (17) and hose (17) from the camshaft housing.
  20. Zero the engine by removing the plug and fitting EN-46789 camshaft fixing tool (18).

  21. Object Number: 2018955  Size: SH
  22. Turn round the engine until the tool engages and locks the exhaust camshaft.
  23. Relieve the belt tensioner (20) and remove the timing belt.

  24. Object Number: 2018956  Size: SH

Installation Procedure

  1. Install the timing belt so that the marks on the belt agree with the marks on the crankshaft (1), exhaust camshaft (1) and fuel pump sprockets (1).
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  3. Remove the bolt from the oil pump and fit EN-46788 crankshaft fixing tool  (3) to the crankshaft sprocket.

  4. Object Number: 2018957  Size: SH
  5. Install the belt tensioner without tightening the bolt.
  6. Adjust so that the belt tensioner arrow is right in front of the mark (5) by pressing the setting lever in the direction of the arrow. Tighten the belt tensioner using a large screwdriver and an M8 bolt for support.
  7. Tighten
    25 N·m (18 lb ft)


    Object Number: 2018958  Size: SH
  8. Remove the adjustment tool and turn the crankshaft 2 turns.
  9. Refit EN-46788 crankshaft fixing tool and EN-46789 camshaft fixing tool . Check that the belt is fitted correctly and that the tension roller setting arrow is in front of the mark.
  10. Remove the tool and fit the plug on the camshaft cover and the bolt to the oil pump.
  11. Install the crankcase ventilation pipe and hose on the camshaft housing.
  12. Install the lower timing cover. Refer to Timing Belt Lower Front Cover Removal
  13. Install the upper timing cover. Refer to Timing Belt Upper Front Cover Removal.
  14. Install the right hand engine mounting. refer to Engine Mount Replacement - Right Side.
  15. Tighten fasteners to body
    58 N·m (43 lb ft)

    Tighten fasteners to engine
    50 N·m +65° (37 lb ft +65°)

  16. Install the air filter housing with cover and the connector on the intake hose. Refer to Air Cleaner Assembly Replacement.
  17. Install the insulation and the engine cover. Refer to Engine Cover Replacement.
  18. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  19. Install the idler pulley centre bolt on the lower timing cover.
  20. Tighten
    340 N·m (245 lb ft)


    Object Number: 2018959  Size: SH
  21. Install the crankshaft pulley (17). Refer to Crankshaft Balancer Removal.
  22. Note: Make sure the guide pin is in its recess.

    Tighten
    25 N·m (18 lb ft)


    Object Number: 2018960  Size: SH
  23. Relieve the belt tensioner and fit the drive belt (18) for the auxiliaries.
  24. Remove the engine fixing tool from the subframe.
  25. Install the engine shield. Refer to Engine Shield Replacement.
  26. Refit the front wheelhouse liner. Refer to Front Wheelhouse Front Liner Replacement.
  27. Install the front right wheel. Refer to Tire and Wheel Removal and Installation.
  28. Lower the car.
  29. Connect the negative battery cable and fit the battery cover. Refer to Battery Negative Cable Disconnection and Connection.
  30. Start the engine and turn it off.
  31. Remove the wing cover.