GM Service Manual Online
For 1990-2009 cars only

    Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1883515  Size: SH
  1. Clean the components with cleaning solvent.
  2. Dry the components with compressed air.
  3. Inspect the camshaft timing chain for binding or wear.

  4. Object Number: 188097  Size: SH
  5. Inspect the camshaft sprocket and the crankshaft sprocket for:
  6. • Broken teeth (1)
    • Damaged teeth (2)
    • Chipped teeth (3)
    • Worn teeth
    • Uneven wear on the edge of the teeth
    • Worn valleys between the sprocket teeth
    • Crankshaft sprocket keyway for wear
  7. Inspect the timing chain tensioner bracket and shoe for cracking and wear.