Need new rear axle and differential 2500HD GMC***UPDATE***

Bummer, if it was a TT you were pulling instead of a fifth wheel you could probably just get a loaner off their used car lot, or rent a 2500 for your trip. But needing a fifth wheel hitch makes all that extremely unlikely. But what the heck, I think asking for a loaner to pull a fifth wheel is still worth a shot; who knows, maybe they can hook you up.