Heater on 2003 Chevrolet Impala

The heater will not blow hot air. What could be the problem?

by in Sevierville, TN on October 02, 2009
2 answers 1 comment
ANSWER by on October 02, 2009
Heater core
ANSWER by on October 04, 2009
Often times when a heater will not work, it is a basic problem like low coolant or a stuck heater control valve. Don't assume something with out checking. often a heater core problem will cause the windows to really fog up and there will be coolant on the floor mat like you say above.
COMMENT by on October 08, 2009
Thank you so much for answering my question. The car was low on water. as soon as we added coolant the heater started working. The water in the floor seems to be coming from a blocked drain under the dash at the firewall. I don't really know what im looking for to fix it but at least it has heat. You were so helpful!!! Thanks to everyone that responded.
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