How do you tighten fan belt on 1987 Cadillac brougham?

To tighten the fan belt on a 1987 Cadillac Brougham, first, locate the alternator, which is typically where the belt tension is adjusted. Loosen the bolts holding the alternator in place, then manually pull the alternator away from the engine to increase belt tension. Once the desired tension is achieved, retighten the bolts securely. Finally, check the belt for proper tension by pressing down on it; it should have about half an inch of give.