05 Saturn Vue

Thanks for the reply. Yes, that's what I'm doing right now. Came inside to warm my hands, check email. I was hoping the answer was connected to something like a computer reset. Everything is run by computer anymore. Wishful thinking hua? I'll check back with you in a couple of hours.

Ok here's what I found. When I pulled the power cable on the blower motor and applied 12vdc across the connectors the motor turns on. Checking the disconnected cable coming into the blower I see:
- switch position off = 0 volts
- sw1 = 5 volts
- sw2 = 5 volts
- sw3 = 5 volts
- sw4 = 5 volts
No change in voltage between switch positions 1 thru 4.

I don't have a schematic of the system so I'm flying blind, but I went back and pulled the connector to the switch and found 5 volts across all the wires except for one. I kinda of stopped here because I don't know exactly what kind of relays and various electronic signals influence the lines running the motor. New cars use thermistors or relays switched by duct position, or voltage controlled by load, etc. It can be tough to figure what what's going on.

Without a schematic what do you recommend I do now?

Well, the worst happened. Out in the cold tonight I attempted to hook up a multimeter and the stupid fan started working, Perfectly I might add. I know the problem will come back because it was cutting off and on when it finally died. Any suggestions?

BTW - I really do appreciate your help! Thank you

Well saturntech9, Sorry for the delay (it's Christmas week), but I fixed the problem. Not having a schematic to trouble shoot the thing was my biggest hurdle. It turns out the blower relay was "intermittently" sticking in the closed position. Every time I put a meter on it, it looked fine, then it locked up again. Anyway, I pulled it out and banged it hard a few times and it would un-stick. $32 dollars later and my wife is happy and warm again. Thanks for your help - Merry Christmas!