Hey My caddy did this also. Same year 1992 cadillac deville. Pull the bottom cover off. Their is 4 bolts take them out now go to the right passenger side. Look in your owners manuel. Their is a fuse under their for the a/c and the power steering or something like that. The fuse is probably if it does not look bad still change it out. Mine ran ruff the car kept dieing and the a/c would not work. Hope this helps. You could also turn the key to the run spot and hold off and warmer. The computer will doo a bunch of things look at your gas gauge I think. The codes shold be an F or an E with numbers. Write them down post them on here and these guys should be able to help you out. I will try to help as much as I can.