GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1644430  Size: SH
  1. Remove the water pump bolts.
  2. Remove the water pump.

  3. Object Number: 1403356  Size: SH
  4. Remove and discard the water pump O-ring.

  5. Object Number: 1644433  Size: SH
  6. Remove the thermostat housing bolts.
  7. Remove the thermostat housing.

  8. Object Number: 1644437  Size: SH
  9. Remove the thermostat and gasket from the thermostat housing.

  10. Object Number: 1254524  Size: SH
  11. Remove the thermostat gasket from the thermostat and discard the thermostat gasket.

  12. Object Number: 1644439  Size: SH
  13. Remove the engine front cover fitting.