This is the perfect rear bumper replacement for my 2003 Chevrolet Avalanche 1500 and 2004 Cadillac Escalade EXT. The old, rotten rear bumpers popped out, and these new parts popped up right away. I used a flat head screwdriver to dig up the remains of the old, crumbling rear bumpers and used the same tool to insert the new parts into the mounting cup on the truck frame. The mounting tray has tabs that hold the part in place. No screws or other fasteners are required. Fits perfectly. Easy repair.