GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1381548  Size: SH
  1. Remove the thermostat housing cap and bolts.
  2. Remove the thermostat.
  3. Remove the oxygen sensor clip.
  4. Remove the thermostat housing and water feed pipe retaining bolts.
  5. Important: Twist the water feed pipe while pulling to remove it from the water pump cover.

  6. Remove the thermostat housing and water feed pipe from the water pump cover.

  7. Object Number: 412423  Size: SH
  8. Remove the water pump retaining bolts. Be sure to remove the bolt that goes through the front of the engine block.
  9. Remove the water pump assembly.