GM Service Manual Online
For 1990-2009 cars only

    Object Number: 858172  Size: SH
  1. Remove the exhaust camshaft sensor bolt.
  2. Remove the exhaust camshaft sensor.

  3. Object Number: 1576683  Size: SH
  4. Remove the exhaust camshaft position actuator bolt and discard.
  5. Remove the exhaust camshaft position actuator.

  6. Object Number: 637575  Size: SH
  7. Remove the intake camshaft sprocket bolt.
  8. Remove the intake camshaft sprocket.
  9. Remove the timing chain.
  10. Remove the crankshaft sprocket.