No heat from heater

2004 CHEVROLET COLORADO
122,000 MILES • 4 CYL • AUTOMATIC
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AMUNN
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  • 2 POSTS
Thermostat has been changed heater core flushed out antifreeze is full what can it be? Is there a wire or a fuse I should be checking? The blower works just blows cold air.
Nov 5, 2016 at 12:55 PM
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JIS001
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There is a cable that controls the temperature door. Remove the glove box and the climate control assembly. Verify the cable did not come off the retaining clips.
Nov 5, 2016 at 2:15 PM
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AMUNN
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  • 2 POSTS
I will try that next thank you.
Nov 5, 2016 at 2:34 PM
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STRAILER
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Hey AMUNN,

This sounds like you have one of two things going on, first you may have a blend door actuator that is not working, next you could just need the climate control reset, Pull the fuse for the climate control for 5 mins to see if that fixes it, if not here is a guide for the blend door actuator.

https://www.2carpros.com/articles/replace-blend-door-motor

Please let us know what you find so it will help others.

Best, Ken


Nov 7, 2016 at 10:01 AM