1994 Chevy Astro van

Its a bit of pain, to do, You got to undo all the bolts on the rear diff case in the rear end, Then allow all the gear fluid drain, Then remove the bolt from the pinion then the rear axle has to be removed, Then you have to pop out the outter seal, As well the bearing pops out as well, Its a tough job, If U havent done it before, Pretty well best bet to have a shop change them.