Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
Do you have a voltmeter?
Teh 50 amp fuse that feeds the blower motor is the INDVERT power fuse in the left hand box under the hood. That is the one on the driver's side of the par but it is much easier to just unplug the motor and measure between the red and black wire. If you have 12 volts there plug it back in and put one of the meter leads to the grey wire and the other to the black and run the blower speed up and down. If you don't see a change in voltage then move from then black to the red and do it again.
Let me know if you have or can get a meter