Mechanics

HEATER DOESN'T PUT OUT ENOUGH HEAT.

2002 Cadillac Escalade

Heater problem
2002 Cadillac Escalade V8 All Wheel Drive Automatic 100000 miles

the heater on my 02 escalade doesn't put out enough heat unless the dial is turned all the way up. I had the thermostat changed and replace the antifreeze but this didn't change anything. I suspect the heaer control valve isn't letting enough coolant into the heater core. Please advise. Thanks
Avatar
Rdk4514
December 4, 2009.




There is no heater control valve, coolant always flows through core. It is an automatic system that relies on sensor values, until you select max heat(90) or max cool(60). It is possible that you have low flow through the heater core due to restriction, you have a fault in the system allowing cold air to blend and cool the warm air, poor airflow across the inside temp sensor.

Factoryjack
Dec 7, 2009.


AD