GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Drain the coolant. Refer to Cooling System Draining and Filling .
  2. Remove the drive belt guard. Refer to in Engine Mechanical - 3.0L.
  3. Remove the accessory drive belt. Refer to in Engine Mechanical - 3.0L.

  4. Object Number: 30978  Size: SH
  5. Loosen the water pump pulley bolts.
  6. Remove the water pump pulley bolts.
  7. Remove the water pump pulley.

  8. Object Number: 26000  Size: SH
  9. Remove the water pump attaching bolts.
  10. Remove the water pump (1).
  11. Remove the water pump gasket (1).
  12. Clean the water pump mating surfaces.

Installation Procedure


    Object Number: 26000  Size: SH
  1. Install the gasket (1).
  2. Install the water pump (1).
  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 mounting bolts.
  5. Tighten
    Tighten the water pump 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 accessory drive belt. Refer to in Engine Mechanical - 3.0L.
  8. Install the water pump pulley bolts.
  9. Tighten
    Tighten the water pump pulley bolts to 25N·m (18 lb ft).

  10. Install the drive belt guard. Refer to in Engine Mechanical - 3.0L.
  11. Refill the coolant. Refer to Cooling System Draining and Filling .
  12. Inspect for leaks.