I have a 2000 pontiac grand prix gt and the fan speed control will only work on #5 setting and when I turn the speed to 4 or less it does not work and it turns off the automatic headlights and then I have to turn them on manually. I have replaced the fan blower and sensor and the control panel for all the switchs that have fan speed temp and where the heat or ac blows on feet front etc. No one seems to know what the problem is and also my rear speakers only work when its hot in the summer plus now the rear defrost does not work. Help me something has gone nuts. please help me!!!
I have a 1997 Grand Prix, blower only works on speed 5, any other speed and the headlights go off. What fixes this?I have a 1997 Grand Prix, blower only works on speed 5, any other speed and the headlights go off. What fixes this?
AnonymousMar 31, 2014
fan in not broken,i applied voltage directly across leads.note;AC GENERATOR DOES NOT WORKfan in not broken,i applied voltage directly across leads.note;AC GENERATOR DOES NOT WORK
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sounds like the blow motor resistor it should be located somewere near the blower maybe. under passenger side dash.....it will be a wide plastic plug with about 4 or 5 wires..
Replace the blower resistor that is mounted next to the blower motor on the passenger side of the vehicle.
This will restore correct blower operation and I suspect it is also back-feeding voltage resulting in your electrical issues.
Two screws hold the blower resistor into the heater case and it is very easy to replace.
Good luck
The pontiacs have an issue with the ignition switch, I have a 2001 grand prix that did the same. The ac fan would only work on 5 and the headlights would go off if on 1-4 replace the switch and all is fine.
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.
were these new parts ? from what i know if you have replaced the fan resistor motor and control unit there is nothing elese in the system i would double check it all again
I have a 1997 Grand Prix, blower only works on speed 5, any other speed and the headlights go off. What fixes this?
fan in not broken,i applied voltage directly across leads.note;AC GENERATOR DOES NOT WORK
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