Thanks for your solution to my problem but I have had the fan resistor replaced along with the fan motor blower?, and the climate control panel the panel that has all the knobs on it. It still has not solved the fan speed it only works on the highest setting 5, and not on 1-4. any other suggestions I HAVE A 2000 PONTIAC GRAN PRI . For a while the fan motor did not work on the lowest speed and now it doesn`t work on the second speed either. Do you think it is in the switch or the resister. The rest of the speeds work fine. Thank rw6847
My ac does not work on speed 3 but i had the same problems here my auto mac. put in an ac delco motor and works except speed 3.
The lights and fan motor are connected along with the radio. Maybe there is a wire that is loose and getting a Parshall connection. A car is like lights in your house. If the lights go out, you check the breaker box, light bulbs and then wiring. The only true parts that work on the Pontiac are gm parts. The actual Delco doesn't have enough power to run the ac, as the grand prix, sport needs. With that said some auto shops have a wire tester and auto parts places do also, some will check the wiring for free it. The device will tell you if it is getting all of the power thru the wiring to run it. Good luck. Hot weather is coming.
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I have been having that same exact problem with my 2002 grand prix for over a year now, and when my ac is on the lower setting the it doesnt work plus the headlights and lights on my dash go out. On Max everything works. i changed the blower resistor(about $35), still doesnt work. i changed all relays and fuses related to the ac, still doesnt work. i changed out the actual ac control switch in the dash, still doesnt work. i have changed everything but the blower motor and have asked every mechanic and auto parts retailer i come across and no one knows the answer. The best answer i got is that it is probably a wiring problem like a short somewhere.
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