GM Service Manual Online
For 1990-2009 cars only

Water Pump Replacement 3.6L Engine

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disconnect the battery ground cable from the battery. Refer to Battery Negative Cable Disconnection and Connection.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling.
  3. Remove the engine cover. Refer to Engine Cover Replacement in Engine Mechanical - 3.6L.
  4. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  5. Remove the radiator air baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement in Body Front End.
  6. Remove the engine drive belt. Refer to Drive Belt Replacement.
  7. Caution: Refer to Safety Glasses Caution in the Preface section.

    Caution: Refer to Radiator Cap Removal Caution in the Preface section.

  8. Ensure engine is below 50 C before removing the coolant pressure cap.

  9. Object Number: 1957889  Size: SH
  10. Remove the water pump pulley to water pump retaining bolts (1).
  11. Remove the water pump pulley (2) from the water pump (3).

  12. Object Number: 1957891  Size: SH

    Important: Use a soft hammer to separate the water pump from the engine cover.

  13. Remove the water pump to engine front cover retaining bolts (3).
  14. Remove the water pump (1).
  15. Remove the water pump gasket (2).
  16. Discard the gasket.

Installation Procedure

    Important: Make sure all mating surfaces are clean and free of grease.

  1. Using a water sealant install the water pump and gasket to front engine cover.
  2. Make sure all retaining bolts are clean and free of debris.

  3. Object Number: 1957891  Size: SH
  4. Install the water pump (1) and NEW gasket (2).
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the water pump to engine front cover retaining bolts (3).
  7. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 1957889  Size: SH
  8. Install the water pump pulley (2) to the water pump (3)
  9. Install the water pump pulley to water pump retaining bolts (1).
  10. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  11. Install the drive belt. Refer to Drive Belt Replacement.
  12. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement.
  13. Install the radiator air baffle and deflector. Refer to Radiator Air Upper Baffle and Deflector Replacement in Body Front End.
  14. Install the engine cover. Refer to Engine Cover Replacement in Engine Mechanical - 3.6L.
  15. Connect the battery ground cable to the battery. Refer to Battery Negative Cable Disconnection and Connection.
  16. Fill cooling system. Refer to Cooling System Draining and Filling.
  17. Start engine and check for leaks.