How do you replace the alternator on a 1992 Chevy Lumina 3.4L Z34 V6?

undo ground wire cable then jack the car up. Much easier from the bottom. Remove the belt by loosening the adjuster until belt can be rolled off pulley.There are 2 12 mm bolts at the top of the alternator .one can be seen from the front without much trouble the other you must feel for from the back . To get the unit to clear Power Steering and A/c lines it is best to let down the sway bar. undo battery wire from back of alternator. I think it will take longer than 20 minutes for the turbo model .