Does anyone know what the problem could be for no heat or a/c in 2007 Grand Prix?
I currently have no heat or air conditioning in my car. Originally I noticed when the blower motor wasn't functioning, so after checking fuses (all appeared fine), I replaced the blower motor and still no heat. I then replaced the resistor and still no luck. As for the control dials, they appear to be working. does anybody have any advice on what the problem could be?