Re: vibration in rear of 89 blazer
have you checked the rear pinion bearing for play? The only other thing I can think of is your pinion angle. If you have a CV shaft in there, I would either get your spring perches moved, or add shims to make you pinion straight in line with the driveshaft. Just my 2 cents. /forums/images/graemlins/thumb.gif
Rick
Oh yeah, welcome to CK5! You'll find that this place has more info on chevy's than you'll ever need. /forums/images/graemlins/eek.gif Also, if you'll fill out your profile, it will help us answer your questions. That way we'll know exactly what you're running on your truck.