99 suburban possible rear end issue - axle shafts?

[domer94]

ive trying to nail down a vibration from about 65 - 74 mph for a long time. so far I have changed wheels / tires with new, made sure they were in balance and true. I just replaced all the rear drum brakes with new. this is still persisting and making the driving experience annoying. so am I nor looking at possible bent axle shafts? I notice when im rolling at around 15mpph, I notice some sort of odd slight bounce in the rear. my universals were checked and look good. I didn't notice any seapage at the bearing seals.

 

[Phone Man]

I had similiar issues and had to have my drive shaft balanced after replacing the ujoints. Who have you ever heard of having that crap done???? Ive replaced them on vehicles before and never ran into this problem.

Idk if that is the issue with yours but i did need it and it done and the vibration issue was fixed. I pulled both of them and it ran me over $100 here on Long island.

 

[domer94]

thanks I will take it to the shop that checked my u-joints and see what he thinks. I will try to see if any weights are missing. when im in a slow roll , the rear feels like its riding on slightly egg-shaped wheels or something. that's the best way I can describe. very subtle , but there if you know how to feel things in your car.