Question about 2003 GMC Yukon XL

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My 2003 GMC Yukon Air conditioner only blows out of the defrost vents after i changed my battery

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Posted on Jan 02, 2017

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SOURCE: 2002 GMC Yukon blows cold air from the front, rear works fine

check you antifreeze level and make sure its full

Posted on Jan 26, 2009

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SOURCE: air wont blow out of the front vents only the defrost vents

Not sure about your exact model but a lot of these are vacuum actuated. If one of the vac lines is broken, leaking or disconnected this will happen. Maybe take look under the dash to see if something is obvious while you try to switch it - look and listen, good luck.

Posted on Mar 29, 2009

  • 1 Answer

SOURCE: Dash vents will not blow air. Defroster and floor vents blow fine.

Is it a new vehicle? I had a new vehicle that had the same problem. Answer was that the holes weren't punched out of the vent.

Posted on May 23, 2009

  • 1 Answer

SOURCE: AIR CONDITIONER ONLY BLOWING COLD ON ONE SIDE AFTER DISCONNECTING BATTERY

Turn your AC off. Turn the car off Crank the car turn ac on drivers side to 60 passenger side to 90 press auto wait 1 minute turn AC off (very important) turn car off turn car back on switch driver's side 90 passenger 60 press auto wait one minute turn AC off( very important) turn car off turn car on AC 70 both sides press auto your ac should be blowing cold If not, you have an expensive problem

Posted on Aug 12, 2009

  • 44 Answers

SOURCE: 2004 GMC Yukon blows hot air out of the driver

Probably the left temp actuator. The wires in the right I/P junction block could have poor tension also, but it's usually the temp actuator.

Posted on Oct 02, 2009

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I am having the same problem with my 03 yukon, it just started after i changed the battery.

did you every get it fixed??

Please respond to kevsel@hotmail.com,

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