GM Service Manual Online
For 1990-2009 cars only

Coolant Heater Description for Chevrolet Venture Ext. 1999

The engine heater is used to preheat the engine coolant for cold weather starting. The engine coolant heater operates from a 110-volt AC power source and uses a heating element installed in the engine blocks water jacket. The heating element warms the coolant when the heater cord is plugged into an AC power source.

The unit has a detachable electrical cord. If the heater fails to operate, check the cord connections and power supply before replacing the heating element.