2004 Chevrolet Avalanche 1500 Q&A

2004 Chevrolet Avalanche 1500 Question: heater not working.

heater not working already replace thermostat. coolant has to be replenish every other day no leaks and no water in oil. -
Answer 1
there is a leak if you have to add. have a shop pressure check it for you. Roy -
Answer 2
I agree with Roy. You have coolant going somewhere. If the coolant level drops it creates an air pocket and can stop circulating to the heater core, causing the loss of heat. We would be happy to look at it for you. www.fenskiauto.com Matt -
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