Question about 1999 GMC Yukon

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My a/c blows hot air; can i do my own freon charge? 1999 gmc yukon

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Yes go to your nearest auto parts store they have a kit to refill compressor( r-12 refrigerant)

Posted on Jul 06, 2010

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Posted on Jan 02, 2017

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My heater don't work in my 1999 GMC Yukon all it dose it blow cold air


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GMC Yukon AC and Heat Questions - Car Forums at Edmunds.com

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

Nov 18, 2015 | GMC Cars & Trucks

1 Answer

Air condition is blowing hot air


low Freon sometimes the front seal on ac compressor goes bad take it to a shop they should have a leak censer to find the leak

Aug 17, 2014 | 2005 GMC Yukon

1 Answer

My gmc yukon 2000 slt rear ac blows hot air when i have ac . on and the front works fine .


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.

Jul 01, 2014 | 2000 GMC Sierra

1 Answer

Front a/c blows cold air but back is blowing hot air


Could be low on freon, a faulty expansion valve on the rear system, or other issues. Can you tell if the rear ac lines are hot and cold ?

Aug 04, 2012 | 2001 GMC Yukon

1 Answer

A/c is not blowing cold air in front but air is cool in the rear.


Hey M, the pressure could be nothing but "hot air" and not freon... (I had this same problem!!) I let off a bunch of pressure..(nothing but clear hot air!!) ..using a small flat punch..on the low pressure side... if freon on comes out right away..stop.. if nothing but hot air comes out.. keep letting it out until freon comes out,,, When mine started letting out freon,, I quit and tried the A/C again... and it has been working fine since.. Just my recent experience!!!!

Jun 27, 2017 | 2001 GMC Yukon XL

1 Answer

1999 Yukon AC not working


does the condensor get wet or frost up?? and does the AC vent drip when the AC is on. My thoughts are maybe the blend door that switches from the heatercore to the evaporator is jammed or the moter failed. Also did a shop do the recharge, ??

Jul 29, 2010 | 1999 GMC Yukon

1 Answer

How can I determine if my compressor is out on my


If you still get cold air out of the rear vents but the front only blows hot air you may have a bad temp door actuator in the dash, it may be stuck on hot and not able to move to cold air. However if you are low on freon with a truck that has front and rear ac then there will be a temp diff between the two. If it is hot air out the front like the heat is on then you have that actuator problem but if it is cool air about the same as the outside air temp then you may be low on freon.

May 23, 2010 | 2004 GMC Yukon

1 Answer

A/C blowing hot air and can't find leak....


Its probably inside the dash, either in the coil or the connections

Apr 20, 2009 | 2003 GMC Yukon XL

1 Answer

1999 gmc 1500 sierra truck v8


The clutch in compressor is controlled by a pressure switch. Start there.

Jun 25, 2008 | 1999 GMC Suburban

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