Envoy 4WD V8-5.3L VIN P (2004)
Engine Block Heater: Description and Operation
Coolant Heater
The optional engine coolant heater (RPO K05) is rated at 400 watts and supplies 1365 btu/hr. The engine coolant heater operates using 110 volt AC
external power and is designed to warm the coolant in the engine block area for improved starting in very cold weather -29°C (-20°F). The coolant
heater helps reduce fuel consumption when a cold engine is warming up. The unit is equipped with a detachable AC power cord. A weather shield on the
cord is provided to protect the plug when not in use.
