How do you change a serpentine belt on a 92 caprice classic?

the belt tensioners are on the alternator and the air conditioner. On the alternator, you would have to loosen the 2 bolts that are on the tension bar. On the air conditioner, you would have to loosen the tension bolt and you would also have to loosen a bolt that is behind the air conditioner pulley. You would have to turn the pulley to get the holes to line up to the bolt to loosen.