GM Service Manual Online
For 1990-2009 cars only
  1. Clean the components with cleaning solvent.
  2. Caution: Wear safety glasses in order to avoid eye damage.

  3. Dry the components with compressed air.

  4. Object Number: 156158  Size: SH
  5. Inspect the timing chain for binding or wear.

  6. Object Number: 188097  Size: SH
  7. Inspect the camshaft and crankshaft sprockets for the following conditions:
  8. • Worn teeth (1)
    • Damaged teeth (2)
    • Chipped teeth (3)
    • Worn valleys between the sprocket teeth

    Object Number: 156150  Size: SH
  9. Inspect the crankshaft sprocket keyway for wear.
  10. Inspect the crankshaft sprocket oil pump drive splines for wear.