The rear AC is blowing hot air when the front is cold why ?? on 2003 GMC Yukon XL Denali

I just realized yesterday on my Yukon Denali 2003 that A/C in the front is cold but the rear blowing Warm or sometimes hot air. For 2-3 minutes it blows cold air in the back then back to heat or natural air. Any reason why?? It has 93K mileage

by in Frisco, TX on April 04, 2010
1 answer 1 comment
ANSWER by on April 04, 2010
low in freon. take it and have a pr check it our and find your leak. Roy
COMMENT by on June 22, 2010
My 2003 Trailblazer is doing the samething. Did you ever figure out what was causing your problem?

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