2004 Chevrolet Impala Logo
Posted on Dec 09, 2010
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I have a 2004 Impala. My heater and defrost blows cold air. It takes forever to start getting warm - I have to drive about 30 minutes before it starts to get warm if it's going to. If I turn the blower control down a lot, sometimes it will get warmer for a while. Or I can switch from dash to floor and it will be warm for a few seconds, then turns cold. Sometimes it fluctuates from cold to warm and cold again, it's very frustrating. I also hear a gurgling sound in the dash sometimes, don't know if this has anything to do with the heat or not... It is in the low 20's here and I'm having to hang my head out the window to see because of the frost, ice, and fogging up...Please help!

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Jeremy W.

Jeremy W.

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  • Chevrolet Master 5,332 Answers
  • Posted on Dec 09, 2010
Jeremy W.
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Staqr by making sure the coolant level is full in the radiator. When the engine is cold remove the radiator cap. If you can't see coolant in the radiator you'll need to add some. once it is full replace the cap and start the engine. Do you have heat now?

If not is the check engine light on?

Do you have a temperature gauge? is it reading lower than normal? The needle should be around the middle mark. If its near the quarter mark than you could have a thermostat stuck open which would cause the check engine light to come on and store a code for coolant temp below operating temperature. I think its code P0128.

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http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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