I have a 2004 Chevy Silverado extended cab 4WD. There was a loud grinding noise from under the truck a few days ago that went away pretty quickly but was extremely loud. Now I have a clunking noise from the rear every time I go over a bump. I went under and checked for any looseness or hanging exhaust and nothing. When I went to shake the truck side to the side there is a clunking noise that sounds like it's coming from the hubs or differential. There is some slight movement to the driveshaft when I try to rotate it by hand. Any ideas?

 

Welcome to the forum. You need to post your question in the Silverado section of The Forum as this is the welcome new members section.