I have a '95 Deville and the dash display keeps going off. We found a temporary solution by accident... On the left side of the dash display, try pressing down the Display On/Off button and the Reset button at the same time for a few seconds until dash display comes back on. It works for me most of the time when the display goes out, hopefully this works for others too. Also, I read somewhere that unhooking the battery for 10 minutes would reset dash display. That seemed to work for a very short time. Try to reset instead first. Way more convenient than unhooking the battery. Hope it helps!