why is the heat in my truck only blowing cold air?

sue71 · #1 Jan 15, 2009, 08:54 AM

Why is the heat in my truck only blowing cold air?

CaptainRich · Jan 15, 2009, 08:58 AM

Any nunber of things could be wrong: Coolant low, heater core clogged, thermostat stuck open, etc.
First, look to see if anything is leaking: radiator, hoses, engine. Then, check to see if the heater hoses (both!) are getting warm. The thermostat is harder to diagnose. Do you have temp guage or just a light?
Let us know....

CaptainRich · Jan 15, 2009, 08:59 AM

BTW: what are you driving?



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