AboutTodd Puccio Expertise General auto repair,electical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm spacific. I have worked at my current dealseship 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.
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 franschise was purchased by this dealership.
Organazations: ASE master techncian
Education/Credentials:High school diploma,2 year vocational school degree
2 year college degree. Associates degree in applied scineces (auto technology)Awards and Honors: GMC master techncian
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 :)
