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No Defroster/floor Air

SsgBulldawg

By SsgBulldawg
in Ask A GM Technician

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SsgBulldawg Enthusiast

SsgBulldawg

Posted
Posted

i have had this problem for awhile now and is getting to the point of just selling the truck. my defroster and floor air do not work at all, the recirculate does and the dash vents do as well. also the vents constantly blow, even when the air is turned off. ie when im dricing down the highway or road with the windows down i still get whatever temp the control module is set on. i have a 2006 sierra sle, with the digital climate control. ive tried a new control headunit, and that didnt work. i was told by the chevy dealership that it would be a 100 dollar diagnosis fee but theyd have to R&I the entire dash and that was a 3-5 hour job at a labor rate or 85 and hour on top of the 100. needless to say i left and hadnt gone back. durring the winter i have to go and start my truck a hour early and leave the heater on 90 and if i go into the store i have to leave it running or my windows will ice over. id like to fix it whilst i dont NEED my defroster or floor vents. any help would be much appreciated. thanks all

 

Jon

  • 2 weeks later...
  • 1 year later...
Purplebeard New Member

Purplebeard

Posted
Posted

Jon, Sorry no one has commented on your post. I just bought a 2000 Tahoe and my dash controller to switch zones (defrost, dash vent, floor heater is not responding to my selection, I suspect thecontroller is bad. I suggest to keep searching posts as that is my plan. Good luck, hope you get heat on the next cold spell (minus here, so far my windshield hasn't had moisture problems yet, defroster would be AWESOME though right now as winter is far from over)

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

you are now entering the "repair by guessing" area where you can throw parts at the truck and hope and pray it works ,but with there being so many possiblities of the actual problem,you can spend the diag fee easliy by guessing

 

good luck,....ps ,do you have a scanner that reads HVAC codes??

 

no code ,we cant help

txab Senior Enthusiast

txab

Posted
Posted

Jon, Sorry no one has commented on your post. I just bought a 2000 Tahoe and my dash controller to switch zones (defrost, dash vent, floor heater is not responding to my selection, I suspect thecontroller is bad. I suggest to keep searching posts as that is my plan. Good luck, hope you get heat on the next cold spell (minus here, so far my windshield hasn't had moisture problems yet, defroster would be AWESOME though right now as winter is far from over)

 

 

Getting a code would be a good thing here. If the controller is bad a code should reveal this.

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