Lumina APV V6-191 3.1L (1990)
Water Pump: Service and Repair
Fig. 7 Water Pump Replacement
1.
Disconnect battery ground cable.
2.
Drain engine coolant, then remove heater hose and serpentine belt shield.
3.
With a 3/8 inch breaker bar or equivalent, relieve tension in serpentine belt tensioner, then remove serpentine belt.
4.
Remove water pump pulley, then water pump, Fig. 7.
5.
Reverse procedure to install.