Question about 2005 Pontiac Grand Prix
My heat is blowing luke warm, and when I turn it on high it blows colder.
I don't want to over step my knowledge but you car is only 3 or 4 years old. I don't think your heater core is bad, unless it is leaking, Sounds like you have a blend door problem in the HVAC system. This door is actuated by a servo motor switching from hot side to cold side. This little servo can go bad and need replacing. Just make sure you don't have any bubbles in the coolant system first as long as you havent done any thing with the coolant system you souldn't have any air in the system Hope this helps you. Please rate my solution for you thank you
Posted on Jan 19, 2009
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Posted on Jan 02, 2017
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