GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 42065 Crank Hub Holding Tool
    • J 42069 Timing Belt Alignment Kit
    • J 42098 Crank Hub TORX Socket

    Object Number: 894191  Size: SH
  1. Install the J 42065 and remove the crank hub TORX using the J 42098 .
  2. Remove the crankshaft drive gear bolt and discard.
  3. Important: Some lobes on the camshafts may be under load from the lifters. Rotate the camshafts carefully until the camshafts are no longer under a load if applicable.

  4. Install the kit tool J 42069-1, found within the J 42069 , between the camshaft gear 1 and 2 to hold the camshaft gears in place while removing the bolt.
  5. Install the kit tool J 42069-2, found with the J 42069 , between the camshaft gear 3 and 4 to hold the camshaft gears in place while removing the bolt.

  6. Object Number: 894697  Size: SH
  7. Loosen the timing belt tensioner.
  8. Important: Do not rotate the crankshaft if the camshaft is not locked in place with 1-2 and 3-4 camshaft locks, J 42069 and J 42069-2.

    Important: Do not rotate the camshafts unless the crankshaft is at 60 degrees BTDC or valves may contact the pistons.

  9. Remove the timing belt.

  10. Object Number: 894874  Size: SH
  11. Remove the camshaft gear bolts and discard.
  12. Remove the camshaft gear washers.
  13. Remove the J 42069 tools.
  14. Remove the camshaft gears.
  15. Remove the drive gear.