What website can I sell a big rig Truck on?

Use truck paper that's your best bet. it's truckpaper.com they sell trucks, trailers, pickups, uhhh think that's it. that's where most drivers go to sell their tractors and trailers and on truckpaper.com it'll show you're listing all over the country which is nice. don't get your hopes up though if it doesn't have a 475+ cat, eaton 13,15,or 18spd with under 800000 miles on it. typically drivers won't even look at those listings unless they're cheap. but you can list almost everything about the tractor from engines, miles, axle weight, tranny, you can list damn near everything about the truck in there. so that's where you should go to sell your truck. only idiots use ebay to sell their tractor or trailer. you're better off with truck paper than ebay. least on truck paper you know you're going to get paid and only have to list it once.

Craig's list is free for listing vehicles for sale.

on ebay lol