GM Service Manual Online
For 1990-2009 cars only

Water Pump Replacement 6.0L

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 .
  3. Drain the cooling system. Refer to Cooling System Draining and Filling .

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

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

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

  12. Object Number: 309751  Size: SH
  13. Remove the water pump.
  14. Remove the water pump gaskets.
  15. Clean and inspect the water pump. Refer to Water Pump Cleaning and Inspection.

Installation Procedure


    Object Number: 550334  Size: SH
  1. Install the water pump and gaskets to the engine block.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 550333  Size: SH
  3. Install the water pump bolts.
  4. 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
  5. Install the heater inlet and surge tank outlet hoses to the water pump.
  6. Position the heater inlet and surge tank outlet hose clamps at the water pump.

  7. Object Number: 179301  Size: SH
  8. Install the inlet and outlet hoses to the water pump.
  9. Position the inlet and outlet hose clamps at the water pump.
  10. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory .
  11. Fill the cooling system. Refer to Cooling System Draining and Filling .

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

Water Pump Replacement 7.0L

Removal Procedure


    Object Number: 1672572  Size: SH
  1. Remove the air cleaner intake duct.
  2. Remove the accessory drive belt. Refer to Drive Belt Replacement - Accessory .
  3. Drain the cooling system. Refer to Cooling System Draining and Filling .

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

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

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

  12. Object Number: 309751  Size: SH
  13. Remove the water pump.
  14. Remove the water pump gaskets.
  15. Clean and inspect the water pump. Refer to Water Pump Cleaning and Inspection.

Installation Procedure


    Object Number: 550334  Size: SH
  1. Install the water pump and gaskets to the engine block.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 550333  Size: SH
  3. Install the water pump bolts.
  4. 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
  5. Install the heater inlet and surge tank outlet hoses to the water pump.
  6. Position the heater inlet and surge tank outlet hose clamps at the water pump.

  7. Object Number: 179301  Size: SH
  8. Install the inlet and outlet hoses to the water pump.
  9. Position the inlet and outlet hose clamps at the water pump.
  10. Install the accessory drive belt. Refer to Drive Belt Replacement - Accessory .
  11. Fill the cooling system. Refer to Cooling System Draining and Filling .

  12. Object Number: 1672572  Size: SH
  13. Install the air cleaner intake duct.