Heater does not work on 2003 Nissan Altima

Car heater does not blow heat through vents or defroster onl cold air.

by in Dallas, TX on January 07, 2011
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2 answers
ANSWER by , January 07, 2011
Possible blend door actuator or thermostat?
ANSWER by , January 07, 2011
Check the antifreeze level first in the radiator and the recovery tank (when the engine is cold). If its low, add as neccessary and get to a service facility to check for leaks. If the antifreeze is full (at proper levels) it will still need to go to a service facility and check other cooling system problems that may be causing your no heat issue.