I had a used rear end installed, when I turn the rear wheel makes noise on 2000 Chevrolet Express 1500

I have 100k and my differential disintegrated. I had a Chevrolet dealer install a used rear end. All new seals bearings where installed. Now whenever I turn the Rear wheel makes a rubbing noise. Just had new brake drums, pads, springs, calipers & tires put on about 1k miles ago. Any ideas? Thanks, Chris

by in Deerfield, IL on September 24, 2011
2 answers 2 comments
ANSWER by on September 24, 2011
is it a possitract rearend?? if so did they put the possi additive in. same happened to my dodge.
COMMENT by on September 25, 2011
Thanks for the input. Is the possitract good or bad? What do I need to do now? The noise seems to correspond with the wheel speed & does not happen when I go strait.
COMMENT by on September 25, 2011
possi not necessarily bad , did you add the additive?? 8-10 bucks mine did the same thing someone changed rear end oil and did not add the stuff before i bought it . added possi aditive and it worked fine.
ANSWER by on November 27, 2012
Open the pumpkin and take a look at the spider/side gears. Check the magnet. Sometimes used rears are just as bad if not worst than the one your replacing. I just did mine, but opened it up first.