I have a solution for you for but the TorkLift # TLE1636 is designed to only fit the Ford Super Duty factory hitch receiver. The bracket and support chains are designed specifically to the Ford receiver. To find a comparable length extension that will fit your 2011 Chevrolet Sliverado 3500 dually you're going to need to reduce your 3 inch receiver down to 2 inches. You will need item # BWRHXA2183 this is a B&W Hitch Receiver Reducer Sleeve. I recommend the Reese Hitch Box Extension and... view full answer...