GM Service Manual Online
For 1990-2009 cars only

    Object Number: 262564  Size: SH
  1. Remove the timing chain tensioner bolt (3).
  2. Remove the timing chain tensioner stud.
  3. Remove the timing belt tensioner.
  4. Remove the tensioner plate.
  5. Remove the tensioner spring and the spring damper.
  6. Inspect the timing belt for wear or for cracks. Replace the belt as necessary.

  7. Object Number: 262559  Size: SH
  8. Inspect the timing belt tensioner for smooth rotation.