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GMC Yukon Climate Control AC and Heat Questions

109 messages,  Last post on Oct 02, 2009 at 3:30 PM

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What is this discussion about? GMC Yukon XL, Chevrolet Suburban, Chevrolet Tahoe, Heating / Cooling, SUV

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#93 of 109 95 yukon heat and a/c problem by cryptrobber69 Jun 02, 2009 (6:29 am)
ok, the blower still works,but the vent selection knob will not change where the air flows and the a/c snowflake light button does not turn on the a/c.when you hit the button to turn on a/c it feels like the vent just pulling in outside air.The recycle but also does not come on to recycle the cabin air.I have checked all fuses ,they are all good.all levels of the blower switch works,just not the position select switch or the buttons.please help!
#94 of 109 2001 Yukon front AC only works on "5" by betazeta57 Jun 18, 2009 (12:13 pm)
(1) Two months ago, the front AC only blew on "5", not 1 through 4. The rear AC works fine. Is it a switch issue!?   (2) Went out to the truck today and the AC blower was running when the truck was off, keys in hand?!?!   (3) I took out a 10 amp AC fuse and killed the front AC. Rear still works great.   What are your comments with regard to these three issues?
#95 of 109 2000 tahoe blower fan by kmimobile2 Jun 20, 2009 (7:02 am)
2000 tahoe 5.7 old body style. Blower fan just quit the other day. Have checked fan by straight wiring to 12 volts, it works. Replaced resistor and relay behind glovebox. Checked all fuses. Don't know where to turn now.
#96 of 109 AC and Heat at same time? by jking5 Jun 24, 2009 (2:19 pm)
When the AC on my 2004 Yukon XL is running, sometimes the heat comes on...just on one side, while cool AC continues to blow from the other side? Any suggestions besides taking it to the dealer's. Warranty has run out and can't afford their rates. Replies to this message: arrie (Jun 25, 2009 12:57 pm) kmimobile2 (Jun 28, 2009 7:17 pm) mcdaddy1956 (Aug 18, 2009 2:01 pm) jking5 (Aug 18, 2009 4:38 pm) jbast (Oct 02, 2009 11:51 am) and 2 more...
#97 of 109 Re: AC and Heat at same time? [jking5] by arrie Jun 25, 2009 (12:57 pm)
Replying to: jking5 (Jun 24, 2009 2:19 pm) I have posted about this before a couple of times. I had the same problem with my '04 tahoe and I fixed it by disconnecting the A/C control unit wire harnesses.   Easy job to do. Take the bezel out and unscrew the 4 screws. You need to hold the clips on both sides to pull the controller out. Disconnect harnesses at the same time and then replace all.   Worked for me.   Arrie Replies to this message: kmimobile2 (Jun 28, 2009 7:17 pm) mcdaddy1956 (Aug 18, 2009 2:01 pm) jking5 (Aug 18, 2009 4:38 pm) jbast (Oct 02, 2009 11:51 am) needlenose (Oct 02, 2009 12:16 pm) and 1 more...
#98 of 109 Re: AC and Heat at same time? [arrie] by kmimobile2 Jun 28, 2009 (7:17 pm)
Replying to: arrie (Jun 25, 2009 12:57 pm) Thanks for the help. Pretty straight forward job except for disconnecting wiring harnesses. Not a lot of room to work with. Blower is working fine at the moment.
#99 of 109 Rear ac problem by nana15 Jul 15, 2009 (3:31 pm)
I have a 97 yukon, the rear cool air stopped working and the front does not seem to blow that cold. I have had coolant put in and it checks fine.The rear just blows hot air,it is ac only in the back. Can someone help?
#100 of 109 99 gmc yukon a/c by coachfields Jul 26, 2009 (7:00 am)
Problem:   My rear A/C blows really cold regularly and the front blows cool for only a couple of days after a couple cans of 134A.   Question:   Is there a leak? Are my valves clogged? Or does something need to be replaced?   Any advice would be greatly appreciated!   Thanks,   Coach
#101 of 109 Re: AC and Heat at same time? [arrie] by mcdaddy1956 Aug 18, 2009 (2:01 pm)
Replying to: arrie (Jun 25, 2009 12:57 pm) All I can say is A-W-E-S-O-M-E!!!!!!!!!!!! My son has a 2004 GMC Yukon and first it had a short in it that was draining the battery. I got that fixed. Then the speedometer cluster went out. $600 at GM to fix it, but I found a guy on E-Bay that fixed it for $64. (Brian's Speedometer Shop-Muldrow, OK) Now the AC was blowing hot air out the driver's side and cold air on the passenger's side. I just went out and took it apart and unplugged the harnesses on the back of the AC control and it works GREAT! Thank you very much! Replies to this message: jking5 (Aug 18, 2009 4:38 pm) jbast (Oct 02, 2009 11:51 am) needlenose (Oct 02, 2009 12:16 pm) tidester (Oct 02, 2009 3:30 pm)

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