The Under the Hood
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Dear Motor Medics, I am having issues with my 2009 Chevy Tahoe. When I try to turn the heat from hot to cold it sticks on the cold position on just the passenger side.
If I use a scanner to reset and calibrate the doors once the engine is hot, it will be fair but not great. I tried replacing the blend door motors on all the positions while I was in there, but it did no good.
Sometimes I also hear a click sound when it operates. What could be going on?
Thank you, Ralph, in Carthage, Texas
Dear Ralph, Summer’s coming so you are good. Just kidding, but who needs heat in the summer right.
We’ve repaired a large number of these and we find door motors failed which you already addressed. Make sure the motors are an exact match as it is common to get the wrong ones as they look similar.
Also, make sure the doors move freely with the motors disconnected. You may find that you have a broken door or something inside of the case causing them to stick, as noted by the noise you have on occasion.
Any repairs to the doors will require complete removal of the dash assembly and some professional help to drain the AC system and recharge it. The job also takes many hours to perform.
The parts needed if a door is broken are fairly reasonable, but the labor is where the cost is. Take care, The Motor Medics
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