Question about 2001 Pontiac Grand Am SE

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When I turn my heater on it only blows cold air and never gets warm, also my temp gauge shows temperature rising the longer that it runs. What could be the problem? My car is a 1999 Pontiac Grand Am

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I had same problem on 2001 Grand Am SE. It would not blow hot unless I would be reving engine up pretty high, and once I stopped i.e. at a light it would get cold again.
My issue was solved when I noticed the coolant level was low, thus not having enough to circulate through the heater radiator.

Posted on Feb 24, 2009

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I would say its probably your thermostat. if it is stuck shut there will be no movement of coolent and therefor not giving you heater core any warm antifreeze. also if your car over heats that is probably the case..

Posted on Feb 21, 2009

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Thermostat is stuck closed. Install new thermostat.

Posted on Feb 21, 2009

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