Question about 2005 Pontiac Grand Prix

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How do you relace a heater coil in 2006 pontiac grand prix?

My heat is blowing luke warm, and when I turn it on high it blows colder.

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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

  • telley randle Oct 22, 2011

    how can you test the blend door...

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I have a 2006 grand prix And my heat is luke warm and when I turn it on high or defrost it get cold. What does this mean.


Hi. I am having the same problem with my 2006 Pontiac Grand Prix too. If you find out the problem, please email me at jtmerz@sbcglobal.net.

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