Water Pump: Service and Repair

NOTICE: When adding coolant, it is important that you use GM Goodwrench DEX-COOL TM (orange-colored, silicate-free) coolant meeting GM Specification 6277M. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner - at 50,000km (30,000 miles) or 24 months.

Remove or Disconnect
1. Negative battery cable.
2. Drain and recover the cooling system.
3. Serpentine belt.
4. Coolant pump pulley bolts and pulley.
5. Coolant pump attaching bolts and pump.
Clean
^ Coolant pump sealing surfaces.

Install or Connect
1. Coolant pump and new gasket.
Tighten
^ Coolant pump bolts to specification.

2. Coolant pump pulley and bolts.
3. Serpentine belt.
4. Tighten coolant pump pulley bolts.
5. Attach negative battery cable.
6. Fill cooling system.
Inspect
^ For leaks.