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What is your question?
Just recently, my 2000 GMC Yukon Denali started blowing hot air out of the front vents, while the rear was still blowing cold air. Is there an easy fix for this?
10 Replies
On all Yukons, Tahoes or Suburbans have two AC systems. The back system has two boxes on it, and the very first one is the one you need to replace. It controls the system to open and close the heat port on the system. If it's closed it'll only blow cold, if it's open it'll only blow hot. You can take it off and manually open it, but when summer rolls around you'll have to do it again and close it. I'll post a link from YouTube later that shows exactly what I'm talking about. Hope this helps. OK everyone, here's the link to what I'm talking about: http://m.youtube.com/watch?v=y4-WlE6-Nkc
I have the same year, same model, and now the same exact problem!
very interesting, i have 2003 gmc yukon denali. The passenger side started blowing warm air. Drivers side and rear air all blow cold. Have you found any answers???
American made garbage. Should have bought foreign!
Leave the U.S.A then
I also have this problem. I asked the dealership about it, and they wanted a $70 diagnostic fee to look at it. They said they $70 would be credited to me on the repair bill if I decided to have them fix it. But, I don't wanna pay for them to guess if they cant find out for sure. Will anyone's dealer give them a free look/ advice?
My post above. Just signed up to receive emails if anyone else has any input. :)
My post above. Just signed up to receive emails if anyone else has any input. :)
I have a 2004 GMC Yukon XL that the front blows cool air then it gets hot and goes back. The back air is working great, but it is a separate unit. The dealer recharged the system 2 weeks ago for $140 and now it is back today because it just isn't right. It has to have something to to with the compressor kicking in or a relay. I still have an extended warranty on it and they need to figure out why this is happening so it can be covered and repaired or replaced.
I am having same problem. Not the fan motor cause we replaced it, not circuit board cause we replace it. Please let me know what works for you before I get rid of this thing.
I have a Buick Lesabre that blows cold on the passenger side, and hot on the drivers side. I would like to follow this question it may be related to my Buick issue
I wish I had the answer I have a 1999 Yukon Denali and the exact thing is happening to me. Warm in front, cool in back. Please post any answers as I would like to know as well.
a/c is working fine. sounds like the diverter door is remaining open allowing the fan to blow air through the heater core. this door is often controlled by engine vac or and electric door motor closing device. A good mech at the dealer should have found this. bye now bob
My 04 silverado starts off cold on both sides then sometimes the driver side vents will blow hot air. when we stop and turn off truck and start it up and it is fine again. Could it be the thermostat for that side not working??? anyone have any answers for this problem?
did you ever find out what was going on with your silverado cause i have the exact same problem with yukon.
What’s the link to YouTube