Question about 2006 Pontiac G6

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Pontiac G6 2006 heater won't heat!

I have a Pontiac G6, 2006. The AC works fine and the fan works on all settings. I just can not get the heater to heat no matter what settings I try. There is plenty of air, just won't get warm. I'm hoping someone can give me a few ideas to try (hopefully from easiest forward..my dad tried to teach me some before he died but we didn't get to the heater.). There is no water leaking from anywhere, which I was told to look for under the dash. And if the first thought is the temp. doors...how do I check this? And is it under my dash? Any help is appreciated.

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  • elyssaotool Nov 21, 2008

    The same thing is happening to my 06 G6!! I replaced my thermostat but still no heat! My G6 has a little over 72,000 miles on it!

  • mlnwc31 Dec 15, 2008

    i have a 2007 g6 gt and the heater works fine as long as your giving it gas.but if your setting still it blows nothing but cold air. still dont whats wrong. help!!!!!

  • fmcdonal Dec 17, 2008

    I recently got a 2008 Pontiac G6. There is no heat when the car is idling but the car runs the heater gets very hot!

  • Anonymous Jan 14, 2009

    2007 G6 - no heat when idling (stop signs, traffic, initial start up) but when the tires are rolling I have heat!!!!

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If you are somewhat mechanically inclined, here is an easy way to see if your heater core is actually plugged or not. It does require that the engine is up to operating temperature, which means you should also be careful not to get burned.

Find where the heater hoses actually pass into the car. They are usually found going into the car behind the engine at the firewall. There should be two black rubber hoses, about 5/8" diameter. With the engine running at operating temperature and the heater on, both hoses should feel pretty hot. If one hose is hot and the other feels cold or lukewarm, the heater core is most likely plugged.

Posted on Jan 18, 2009

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Could be any of the following 1. stuck(open) or missing thermostat 2. plugged heater core 3. (very) low coolant or air in the fluid circuit
I am leaning more towards a stuck thermostat. It can get that way for a number of reasons. 1. age (unlikely for a 5 year old car 2. overheated (warped) and could stay stuck open or closed(more severe) 3. improper installation (it's not fun)
Hope this helps

Posted on Feb 02, 2011

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I had a similar problem in my Dodge Stratus after I backflushed the coolant. It ended up being the heater core was clogged and just needed flushed. The heat has worked fine since and that was about a year ago.

Posted on Nov 28, 2008

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