I have a 92 Seville, this a.m. the blower would't turn off. Press the off button in climate control, still on. Disconnected battery, then reconnected - still running. Changed a/c relay with horn relay, still runs. Every time I start the car, the climate control is in "auto" mode, even if it's in "off" when I turn the car off. Ended up putting a switch on the single wire to the blower control wire so my wife doesn't have to keep unhooking the battery. Is the problem the blower control? I'm hesitant to spend $120 -$150 for a new one if I'm missing something simple. The 2 local Caddy dealers service people each said they'd never run into this. Any help would be appreciated.