Rearend noise

DARTLARRY said

Have an 8 3/4 suregrip makes no noise under acceleration, when i let off of the accelerator it makes a whining bearing sound. I am trying to pin point the area, wheel bearings look fine, could it be a differential bearing? How hard is this to replace?

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Outer pinion bearing. Stop driving it.
Get under and check the yolks nut is tight.. itll will send the pinion gear into the carrier if it gets real loose. More than likely you'll need to pull the axles out a hair and drop the center pumpkin out to inspect and replace bearings.