GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Drain the cooling system until the coolant is below the level of the water pump. Refer to Cooling System Draining and Filling .

  2. Object Number: 368805  Size: SH
  3. Remove the drive belt guard.
  4. Loosen the water pump pulley bolts.
  5. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.4L.

  6. Object Number: 30978  Size: SH
  7. Remove the water pump pulley bolts.
  8. Remove the water pump pulley.

  9. Object Number: 30996  Size: SH
  10. Remove the water pump bolts.
  11. Remove the water pump.
  12. Remove the water pump gasket.
  13. Clean the water pump mating surfaces.

Installation Procedure


    Object Number: 30996  Size: SH
  1. Install the water pump gasket.
  2. Install the water pump.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the water pump bolts.
  5. Tighten
    Tighten the bolts to 10N·m (89 lb in).


    Object Number: 30978  Size: SH
  6. Install the water pump pulley. Loosely install the mounting bolts.
  7. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.4L.
  8. Install the water pump pulley bolts.
  9. Tighten
    Tighten the bolts to 25N·m (18 lb in).


    Object Number: 368805  Size: SH
  10. Install the drive belt guard.
  11. Fill the cooling system. Refer to Cooling System Draining and Filling .
  12. Inspect the cooling system for leaks.