GM Service Manual Online
For 1990-2009 cars only

    Object Number: 158966  Size: SH

    Important: Some of the 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.

  1. Install the J 42069-1 Camshaft Locking Tool between camshaft gear 1 and 2 to hold the camshaft gears in place while removing the bolt.
  2. Install the J 42069-2 Camshaft Locking Tool between camshaft gear 3 and 4 to hold the camshaft gears in place while removing the bolt.

  3. Object Number: 159009  Size: SH
  4. Remove the camshaft gear bolts.
  5. Remove the camshaft gear washers.
  6. Remove the camshaft gears.