Why is air diverted to defroster when I turn on a/c
35

Asked by Bob_O Feb 06, 2017 at 03:02 PM about the 2004 GMC Yukon XL 1500 SLE

Question type: Maintenance & Repair

When I turn on a/c, air is coming thru dash vents.  After about 30 seconds later the air is diverted to the defroster vents.  This has the auto system

2 Answers
35

Bob_O answered 8 years ago

Found out the fix, at least for me. All is good now

3 people found this helpful.
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Guru1W182 answered 5 years ago

My 2008 GMC Yukon is doing the same thing. It starts out fine and then ends up blowing out of defrost . I can cycle through the modes and get it back to vents but then it just does it again. WHAT did you do to fix this problem? Thanks for any help.

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