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99 cadillac the AC don't blow on the vents only windshield.

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Seems like the Switch is bad.
The switch Could be bad or the Motor for Switching from the defrost to the passanger must be bad.
Things wear out and could you check these items, Hot cold switch and watch what it does. The rear defrost button, the recirculating button, the Outside air button, and A.c button. If a combination of these buttons and switches do not work or actuate their respective commands then you should replace the switch. If it only the Defrost switch then you should have a Certified Tech check it out. Removing the dash is not a task for the average joe. Thanks and hope this Helps thank you for your question.

Posted on Jul 17, 2009

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