GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 42069 Timing Belt Alignment Kit


    Object Number: 345381  Size: SH
  1. Install the J 42069-1 between camshaft drive sprocket 1 and 2 to hold the camshaft drive sprockets in place while loosening the bolt.
  2. Install the J 42069-2 between camshaft drive sprocket 3 and 4 to hold the camshaft drive sprockets in place while loosening the bolt.

  3. Object Number: 159009  Size: SH
  4. Loosen the camshaft drive sprocket bolts.
  5. Important: Some of the camshaft lobes are under load from the lifters and may abruptly rotate with the locking tools removed.

  6. Remove the camshaft locking tools and carefully rotate the camshafts to release the lifter pressure from the camshafts, if applicable.
  7. Remove the camshaft drive sprocket bolts.
  8. Remove the camshaft drive sprocket washers.
  9. Remove the camshaft drive sprockets.