Question about 2005 Chevrolet Impala

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I have a 2005 impala it blows cold air only.the thermostate is set at the hottest setting.i dont think its the heater core because it does not overheat and its not leaking antifreeze.what could it be?

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It's more than likely the thermostat. If you have a 3800 V6 this is a very quick and easy fix. It you have a 3400 engine, this can be a pretty frustrating job. The bolts that hold the thermostat housing on are very difficult to get at on a 3400 engine. Either way, the thermostat itself is only $10-$12.

If your thermostat is stuck open the engine coolant will constantly circulate and won't warm up to normal operating temperature. Since it isn't warming up, you won't have any heat inside either.

Posted on Nov 18, 2010

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