I don't know if this pertains to this thread, but seems to have relevance. I purchased a '14 crew cab Silverado with the 5.3L, 3.42 gearing, and a 6 speed auto. It has 355 hp with 383 ft. lbs. of torque and a towing capacity of 9.8k. I pull a TT with an unloaded weight of 5,100 lbs, but often add another 2k of gear and passengers, and the truck doesn't even break a sweat. It has a cylinder deactivation mode, even going into this mode while towing on flat roads (without "hunting" a gear). The end result - Comfortable towing at (believe it or not) > 13MPG with a "half ton". I have to also note that I've seen 23 MPG w/o the TT. Of course, the load will dictate the type of TV required, but there are more options than diesels, "Ecoboosts" and gas hogs.
