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
Expert: Todd Puccio Date: 7/22/2008 Subject: Intermittant AC blower on 1996 Bonneville SE
Question My sister's car was only working on high (position 4) most of the time. I could trick it to work on the lower three positions by switching back and forth. Now it only work sometimes in any speed. She says somthing about a replaced burned thing (relay I guess) being replaced with a used one by a mechanic.
Answer Hi Al:
well it could be a few things. The blower mortor uses a part called a resistor and that is what gives you the lower speeds. The resistor is located in the heater case under the hood. That could be bad or the relay which you said you changed? Was it the same part # as the one you took out? the last thing could be the blower switch it's self in the control head.. Of all the parts it could be the most likely cause would be the resisitor or the relay. Good luck :}
