96 Suburban vibration, rear differential?

Hello,
I have a '96 1/2 ton 4WD Suburban. I think I have a rear
differential that is going bad. Here are the symptons. A low growl
noise and vibration occur when deaccelerating down hill in 2WD. With
gas applied or pulling up hill there is no noise. The weird thing is
that the noise is much more noticeable when going down hill and turning
a gradual left turn.
The rear u-joints are good, I recently had the rear drive shaft
balanced and the u-joints replaced after the noise began, no help.
The increased noise when turning to the left is what has me
confused. Other than that I would be certain the noise is from the rear
end. Is there a chance that a rear wheel bearing could cause such a
thing?

Thanks for any ideas,
Bruce

more common in the front, but when you turn, the outside wheel bearing that
turns faster makes more noise if it is going bad.
have to pull the axel. but might be other bearings.
old john

"bruce f" <bruce.furman.RemoveThis@gmail.com> wrote in message
news:1149903253.992409.113570@h76g2000cwa.googlegroups.com...
> Hello,
> I have a '96 1/2 ton 4WD Suburban. I think I have a rear
> differential that is going bad. Here are the symptons. A low growl
> noise and vibration occur when deaccelerating down hill in 2WD. With
> gas applied or pulling up hill there is no noise. The weird thing is
> that the noise is much more noticeable when going down hill and turning
> a gradual left turn.
> The rear u-joints are good, I recently had the rear drive shaft
> balanced and the u-joints replaced after the noise began, no help.
> The increased noise when turning to the left is what has me
> confused. Other than that I would be certain the noise is from the rear
> end. Is there a chance that a rear wheel bearing could cause such a
> thing?
>
> Thanks for any ideas,
> Bruce
>