GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN 46109 Guide Pin Set
    • J 45059 Angle Meter
        For equivalent regional tools, refer to Special Tools.

    Object Number: 1961731  Size: SH
  1. Install the 8 mm (0.315 in) guide from the EN 46109 set  (1) into the cylinder block positions as shown.

  2. Object Number: 1961732  Size: SH
  3. Install the NEW engine front cover to cylinder block seal (1).

  4. Object Number: 1961733  Size: SH
  5. Place a 3 mm (0.118 in) bead of RTV sealant (1), on the engine front cover as shown.

  6. Object Number: 1958123  Size: SH
  7. Place the engine front cover (1) onto the EN 46109 set and slide into position.
  8. Remove the EN 46109 set from the cylinder block.
  9. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1961734  Size: SH
  10. Hand start all the engine front cover to cylinder block retaining bolts (1).

  11. Object Number: 1961735  Size: SH
  12. Tighten the engine front cover to cylinder block retaining bolts in the sequence shown.
  13. 7.1. Tighten the bolts a first pass in sequence to 20 N·m (17 lb ft).
    7.2. Tighten the bolts a second pass in sequence an additional 60 degrees using the J 45059 meter .
  14. Install NEW O-rings on the camshaft position sensors.

  15. Object Number: 1961736  Size: SH
  16. Install the camshaft position sensors (2).
  17. Install the camshaft position sensor to front cover retaining bolts (1) and tighten to 10 N·m (89 lb in).

  18. Object Number: 1958119  Size: SH

    Note: LE0 and LW2 engines only have intake camshaft position actuator solenoids.

  19. Install the camshaft position actuator solenoids (2).
  20. Install the camshaft position actuator solenoid to front cover retaining bolts (1).
  21. 12.1. Tighten the bolts to 10 N·m (89 lb in).
    12.2. Tighten the bolts a second pass in sequence an additional 60 degrees using the J 45059 meter .