Question about 2005 GMC Yukon SLT

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2005 GMC Yukon SLT overheating and heat not working

My heater is not working, only blowing cool air, and the fan control for the heat/AC does not seem to be working. It is also overheating.

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motor1258
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SOURCE: Air Conditioning not running cold on 2005 Yukon XL 2500

bigger hose is usually low side.

Posted on Jun 20, 2009

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SOURCE: cooling fan relay location on a 2005 gmc sierra

Check the fan clutch operation. And also check for leaks.

Posted on Mar 05, 2010

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SOURCE: My 2005 Yukon AC blower is not blowing. THe

There is a service bulletin for this problem which replaces the blower resistor and connector. Mine had the same problem while on vacation. No fan speed control, and when it did work, the fan would keep running after the vehicle was shut off. Mine is currently in the shop getting the service bulletin installed.

Posted on Jul 28, 2010

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forums.edmunds.com > Chevrolet > Chevrolet Suburban

Jul 20, 2010 - 30 posts - ‎16 authors
I just don't get why that doesn't work right in the first place. ... I have 99 Yukon that has a problem with the front air. .... $55,000 for my GMC, I guess expecting cold air when we push A/C and getting 90 degree blast ... 2001 Yukon XL 1500 Front heat & air fine, rear ac blows hot as if heater is on in all settings. More results from forums.edmunds.com

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I have a 2000 GMC Savana Van SLT with front and rear AC/Heat. My front would blow hot while the rear blew cold with AC on. It turned out to be low on Freon. It's hard to know if you have the right amount of freon installed because pressures vary depending on the ambient temperatures. So the best way is to remove all the freon then reinstall the recommended amount as listed on the evaporator housing near the firewall. This worked fine for me... works like new after installing the correct amount of freon.

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No heat just cold air


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