I have a 97 Regal GS. A couple of days ago my AC/Heater blower got "stuck". Even when the car is off and key is out blower is still blowing air. I took out the fuse (says High Blower 25A) and this fix the problem temporarily. I went to a garage and the guy told me it's AC/Heater control unit. I was suspicious, but my AC/Heater control unit display died 2 years ago, so I thought may be that's the end of it. So, after some reading on the net, I took out AC control unit. Guess what? Same problem. After some additional reading here, I think it has something to do with blower relay or resistor. The only problem is I don't know where any of them is located?