Peeling paint prep

[1968chevyprerunner]

Well, I've got to go ahead and bite the bullet and paint my 95 Suburban. Paint on roof, hood and tops of front fenders look like the mange, chipping off everywhere. Paint from backdoors to rearend look great. I know this is one heck of a problem for this year model. Seeing how as I want to paint it myself, I need some advice on the best way to prep. I know that it apparently is a primer issue. Do it I have to completely strip the vehicle or can I sand all the loose stuff off, scuff the rest and then apply a good epoxy primer. I'm sort of lost on this. Any help would certainly be appreciated.

Thanks,

1968Chevy Prerunner