Question about 2007 Chevrolet Impala LS Sedan New Cars

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Heat blows only when car is in drive when coming to stop light it blows cold air. Have added more coolant but it has not fixed the problem

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You problem sounds like a "Blend Door" issue, you have these doors that open & close and everything in between to adjust air temp. These doors have a "peg" that is connected to an arm or wire just like on a ten speed bike to shift gears, that peg may have broken off.

Another issue may be a stuck open thermostat, if you have a temp gauge is it running at normal temp? If the thermostat is stuck open then heat may become an issue.

I have found several 2007 Chevrolet Impala blend door issues here in

Hope this helps.

Posted on Dec 29, 2010


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