GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Corvette 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Water Pump Replacement

Removal Procedure

    Object Number: 179304 Size: SH
  1. Remove the air cleaner intake duct.
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory in Engine Mechanical - 5.7L.
  3. Drain the cooling system. Refer to Cooling System Draining and Filling .

    4. Object Number: 179301 Size: SH
  4. Reposition the inlet and outlet hose clamps at the water pump.
  5. Remove the inlet and outlet hoses from the water pump.

    6. Object Number: 185256 Size: SH
  6. Reposition the heater inlet and surge tank outlet hose clamps at the water pump.
  7. Remove the heater inlet and surge tank outlet hoses from the water pump.

    8. Object Number: 550333 Size: SH
  8. Remove the water pump bolts.

    9. Object Number: 309751 Size: SH
  9. Remove the water pump.
  10. Remove the water pump gaskets.
  11. Clean and inspect the water pump. Refer to Water Pump Cleaning and Inspection in Engine Mechanical - 5.7L Unit Repair.

Installation Procedure

    Object Number: 550334 Size: SH
  1. Install the water pump and gaskets to the engine block.

    2. Object Number: 550333 Size: SH

    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.

  2. Install the water pump bolts.

    3. Tighten

    1. Tighten the water pump bolts a first pass to 15 N·m (11 lb ft).
    2. Tighten the water pump bolts a final pass to 30 N·m (22 lb ft).

    Object Number: 185256 Size: SH
  3. Install the heater inlet and surge tank outlet hoses to the water pump.
  4. Position the heater inlet and surge tank outlet hose clamps at the water pump.

    5. Object Number: 179301 Size: SH
  5. Install the inlet and outlet hoses to the water pump.
  6. Position the inlet and outlet hose clamps at the water pump.
  7. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory in Engine Mechanical - 5.7L.
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .

    9. Object Number: 179304 Size: SH
  9. Install the air cleaner intake duct.