Last post on Dec 02, 2013 at 10:49 PM
You are in the GMC Yukon
What is this discussion about?
GMC Yukon XL, Chevrolet Suburban, Chevrolet Tahoe, Heating / Cooling, SUV
#277 of 308 Re: 2003 GMC Yukon no rear heat/ac. [bowzman]
Dec 01, 2011 (11:45 am)
Our 2003 Yukon had the exact same problem. We had a friend who knows everything about cars check it out. He told us we would need a new HVAC controller, which was located on the back rt. passenger side of our Yukon. In the back remove the entire plastic panel on passenger side, there will be a relay plug switch where the wiring plugs in to the HVAC controller. I recommend you disconnect the wires and reconnect them making sure they are securely connected. We went without heat all winter and were too cheap to but the HVAC controller ($135) but needed to reconnect the A/C in the back when the summer months came around. Guess what when we hooked it back up the heat worked perfectly, as well. So before you do anything else I would do that. Also, my husband and I have no mechanical experience other than holding the flashlights for our dads when they worked on cars so it has to be pretty basic for us to fix. Hope this fix works for you!
#278 of 308 Rear heat issue 2003 Tahoe
Dec 17, 2011 (9:49 am)
I have a 2003 Tahoe and I am having an issue with the rear heat. My blower motor would work intermittently and then stopped all together. I have checked all the fuses, ran voltage to the blower and that works great,and also replaced the blower motor resistor twice. The resisitor clicks and I get 12 volts going to the blolwer motor but it still does not work. Any suggestions?
#279 of 308 Re: 2003 Yukon XL AC Problem [cinwithers]
Jan 24, 2012 (6:36 am)
Did you ever receive a solution to your a/c problem? I am having the same issue.
#280 of 308 Re: 2003 Yukon XL AC Problem [bsmall22]
Jan 24, 2012 (5:54 pm)
Yes. I disconnected the battery and reconnected it. I saw a post on here that recommended that and it was never a problem again. Hope that helps!
#281 of 308 Re: 2003 Yukon XL AC Problem [bsmall22]
Jan 24, 2012 (7:35 pm)
a friend and i tore appart the dash only to find a actuator under the dash on the passenger side broken. dealer said $250.00 for a new one my friend found one on the internet for $50.00. been working great!
#282 of 308 2002 GMC Yukon: Not cooling in the front but cold AC in the rear
Aug 01, 2012 (10:51 am)
Over the past week, I've noticed a significant decline in the air conditioner temperature in the front of my Yukon (i.e., air coming out of the dashboard) and it's barely above cool now (it used to blow really cold) but the unit in the rear (i.e., middle and rear rows) still blows pretty cold. I checked the refrigerant pressure and it doesn't need to be recharged.
#283 of 308 denali left side ac temp actuator.
Aug 02, 2012 (6:43 pm)
I replaced the switch and you can get to it under the dash just above the gas pedal.It did not stop the driver side from blowing hot air.IT starts blowing cool air then switches to heat quickly.Turning it on and off it does the same thing.
Could it be a resistor?
#284 of 308 Re: denali left side ac temp actuator. [libby14]
Oct 01, 2012 (5:34 am)
I have the exact same problem with my '04 Yukon Denali. I can set the dual temperature controls on the left to 60 and the right to 75, and I will get heat from the left vents and cool air from the right. It does start out blowing cold air for about 5 seconds, bit it quickly switches to hot. Have you been able to figure it out yet?
#285 of 308 A/C on with out pushing button
Oct 09, 2012 (4:07 pm)
I have a 2001 Yukon XL 5.3 liter. When we start it the a/c is on. We can turn it off by pressing the on/off button. The a/c works. I took it to the shop and they could find nothing wrong. Any suggestions?
Oct 15, 2012 (4:48 am)
I have a 2005 GMC Yukon SLT that will not move the air flow to the various vent settings either manually or through the AUTO function. I have had the HVAC head unit replaced 3 years ago due to a soda can explosion that took it out, and an actuator on the passenger side replaced because the fan would not shut off....even with the car off and the keys in my hand. As I type the air flow only comes through the defroster vents on the top of the dash. The rear HVAC is functioning perfectly.