2001 Chevy Astro REAR-END WHEELS

I rebuilt my rear end brakes at 160,000 miles, and as it turns out, they did not need it, because 80% of braking is from the front wheels. I have rebuilt my front brakes 3 times now and I always replace new rotors because they are cheap.

I would do 2 things. Look at your driveshaft connection to the rear differential. I have had to replace the pinion seal. That is the seal that keeps fluid in the differential on the front where the universal joint attaches to the driveshaft. Just climb under the vehicle with the transmission in park and grab the driveshaft and rock it back and forth and you should not be able to move it much at all.

Next, jack up and support the rear of the vehicle off the ground on both sides and start it up and put it in drive and let the wheels spin and watch them for terribly out of balance or center condition. It will be obvious.

Ken