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Pontiac Repair/air conditioning

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Expert: Todd Puccio - 6/21/2009


Question
my air conditioning only blows through the defrost and nothing changes when I turn the knob controlling where it is to come out the vents. is a hose hooked up wrong? this is on a 95 pontiac grand prix

Answer
Hi Doby:

I think this has a vacuum leak going to the heater control head or a bad control head it's self. My guess is a leak going to the control head more so then anything else. If the control head is missing vacuum the air from is defalted to full defrost. So either a vacuum hose came off the engein or is cracked or split. Good luck :)

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Todd Puccio

Expertise

General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.

Experience

Experience in the area:I have been employed by the same Gm dealer for 18 years and and a ASE master technician. I work at a Pontiac and GMC truck store. Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician

Education/Credentials
Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

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