Question about 1998 GMC Jimmy

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Why is my ac not blowing hard thru the vents?

My ac blows but not seeming to blow hard thru the face vents, I took the floor vent piece alose and blows hard thru it. Also when switching from defrost to vents, it takes a minute to switch to vents. Please send any thing that I can try.
Thanks,
Donna

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  • yadayada
    yadayada May 11, 2010

    is the mode door switching to dash registors? dounds like the air door is no moving, do you have a good vacuum source to the mode control switch in the dash control from the engine. also if u are not sure how this system works do a Goggle on how the car ac system works

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Check vacuum lines under hood for leaks

Posted on Jun 28, 2009

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Your fan switch and temp control unit on the dash is bad .This is the unit that you turn the control from .they develop a internal leak.thank for using fixya

Posted on Jun 28, 2009

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9_9_2012_12_22_41_am.jpg

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