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Does the AC use Freon in the 2002 GMC Sierra - 2002 GMC Sierra

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Yes it take 134a freon, if system is empty for a full recharge take's 1.76lbs of freon.

Posted on Jun 04, 2010

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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

Freon level good but a/c works intermittently


Could be several things such as a weak pressure switch or weak clutch magnet.
You would need to check for power at the ac clutch when it stops working and then go from there.

Apr 09, 2013 | 2002 GMC Sierra 2500HD

1 Answer

When the ac is on the driver side vent blow only hot air and the passenger vent blow the cold ac air


Usually a sign of low freon or a blend door problem. If the system is full of freon, I would check the blend doors under the dash.

Aug 13, 2012 | 1994 GMC Sierra

1 Answer

1989 GMC sierra 1500 AC not working. what to check first ?


freon first, then low and high presure switchs,but if it low on freon you have a leak and needs to be repaired

Aug 24, 2010 | 2002 GMC Envoy

1 Answer

Oily coating inside of windshield


Coolant will be orange or green in color
Freon evaporates although if an AC leak a slick oil can appear

Jul 31, 2010 | 1994 GMC Sierra

1 Answer

2005 gmc sierra, ac went from cold to hot while running


bamerson: have your A/C system pressure tested. Verify you have enough Freon in your A/C system. If your pressure is low, or no pressure is detectable, then you should recharge your A/C system and check for leaks with liquid dye or a Freon sniffer. If this information has been helpful, please vote, thank you.

Jun 05, 2009 | 2004 GMC Sierra

1 Answer

CHECK ENGINE ON AND A/C PROBLEMS


Chances are you have a leak in you AC system and lost the freon.

Mar 21, 2009 | 2001 GMC Sierra 1500HD

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