1998 Pontiac Grand Am Q&A
1998 Pontiac Grand Am Question: Blower motor goes out only in the winter time.
Awful to happen in the winter when you need heat and defrost. I wonder if the motor is getting water in it. You would need a wiring diagram and component locator to start doing some tests. I would get the motor in a "failed state" apply power or ground to it and see if it then works. See if it gets power or is "missing" ground and start tracing either the power or ground side of the circuit. GM wiring diagrams are straight forward to read and comprehend. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online - patrick mannion