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Originally Posted by touchlinc
My 04 Tahoe Dual climate control on dash blows cold air. When I turn the knobs from 60-89, it blows cool air but when I turn it to 90 degrees, it blows warm air. The controls on the ceiling work for blowing warm and cool air in the back of the vehicle.
Would you think that a temperature sensor above drivers head is bad or the climate control module unit itself ?
Or should I disconnect some fuses or battery for awhile and see if it resets itself?
Thank you.
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Has battery went dead or been replaced or any other work been done on it?
To reset key with off remove raido fuse and reinstall.
If that does not help.
You need to get it on a good HVAC capable scanner and check for codes and operation.
Post bacvk any codes.
MT