Question about Pontiac Grand Am

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When turn on no heat ac works fine - Grand Am Pontiac Cars & Trucks

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Find the heater hoses and carefully touch or lightly grab hoses after engine is warm with light gloves on both hoses should be hot! if only one is hot chanes are you have a plugged heater core OR a heater valve that is stuck. Look on the heater hoses or the intake manifold for this valve it will have a small vacuum hose going to it. Also make sure your cable to the heater box is hooked up to the temperature blend door. You can call or go to a public library and see if they have repair manuals you can look at. It would be helpful to know the year and model of the Pontiac you are working on. PLEASE NOTE if you take it to a repair facility just give them the symptoms not what you think it is. Also be aware that replacing heater cores can get very exspensive so you need to KNOW the problem. Depending on your ability you may want to take it to a repair facility.

Posted on Oct 13, 2010

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