Question about 2008 Chevrolet Tahoe
Using air conditioning and driver side air vents went to extremely hot air coming out, but passenger side air was fine
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Posted on Jan 02, 2017
As long as you did not have to go into the dash to splice those wires, I would say that you have either a Tempreture door that is Broken, or the actuator that controls the passenger side temp. door is bad. Most likely cause will be the actuator, because they have a very high failure rate. The actuator is located is located on the very top of the a/c-heater box behind the radio and a/c control head. It will be rather hard to change because every thing fits so tight. But if you remove the radio and the A/c control head you should be able to find it. Let me know if you need further assistance.
Posted on Aug 21, 2008
i was a GM mechanic for many years, the problem you are having is one of your mode door actuators has gone bad, most of the time it is the actuator on the drivers side that causes the problems, i have seen this many times, sometimes you can take it to the dealer and they can hook the computer up to it and recalibrate it but most times it has to be replaced , it is located under the dash in the area above your gas pedal.
Posted on Nov 10, 2008
It sounds like the HVAC head needs to be recalibrated, most likely when you unhooked the battteries you lost the memory to the control head, it's in a default position/state.
Posted on Aug 21, 2009
There is a actuator motor that controls this,and it is not working,unfortunately ,the whole dash has to be removed to replace the actuator motor.If this was at all helpful,please rate,thank you.
Posted on Jul 07, 2010
Just had this happen today to my 2007 silverado heat on the right side cold air on the left side. After engine was off 15 minutes and restarted heat was on both sides. I'm guessing a relay failed to open door to allow the heat to flow thus blowing cold air.will monitor diligently for a while.
Posted on Feb 09, 2011
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