GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 36008-A Camshaft Timing Pins


    Object Number: 62885  Size: SH

    Important: The timing chain tensioner must be removed to unload chain tension before the water pump is removed. If the tension is not unloaded, the water pump will become cocked in the timing chain housing and the water pump will be difficult to remove.

  1. Rotate the timing chain sprockets to line up the holes. Install the J 36008-A .
  2. Remove the bolts holding the tensioner in place.

  3. Object Number: 62307  Size: SH
  4. Remove the water pump cover to the cylinder block bolts.
  5. Remove the water pump assembly to the timing chain housing nuts.
  6. Remove the water pump cover assembly.
  7. Remove the water pump.
  8. Remove the water pump cover to the water pump assembly bolts.
  9. Clean and inspect all sealing surfaces.
  10. Inspect the water pump for cracking.