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Old 06-18-2009, 08:30 PM   #1
72freak
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AC front/rear problem on 99 Tahoe

My friends Tahoe is blowing cold AC in the rear.......but not in the front.

Dial is set correctly in front.

Any thoughts?
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Old 06-18-2009, 11:40 PM   #2
bwood
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Re: AC front/rear problem on 99 Tahoe

Does it blow at all up front? If not he may have a fan issue.

Does it blow but not cold? If so he may have a blend door issue and it is stuck with some heat on.

Also check refrig levels. I don't remember how the refrig lines run, but I wonder if a low charge is making the comp cycle and the rear is pulling the larger load or getting what little may be avail.
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