Not sure what a 17b is, better model number or a link to info on the travel trailer would be better.
That said, any of the 2nd Gen (2015 & newer) Colorado/Canyon trucks with V6 or diesel should handle that no problem. With the V6 or diesel rated to tow in the 7K range. The payload of most of the trucks is around 1400 pounds, a tongue weight of 400 pounds should be fine, but when you say supposedly, I assume you are not sure of tongue weight. The factory number usually does not include anything from the loaded weight, including propane tanks, fresh and waste water, etc. I'd probably figure you are hauling 500 pounds.
That is a pretty small travel trailer, what truck do you have that is having issues with that load?
Biggest issue I think you will find is the mirrors are not great, you probably want to look at some aftermarket mirrors to see around the trailer.
My Silverado would probably hardly notice that trailer, but I would have been comfortable with my Canyon towing the trailer you are describing, with aftermarket mirrors.
That said, any of the 2nd Gen (2015 & newer) Colorado/Canyon trucks with V6 or diesel should handle that no problem. With the V6 or diesel rated to tow in the 7K range. The payload of most of the trucks is around 1400 pounds, a tongue weight of 400 pounds should be fine, but when you say supposedly, I assume you are not sure of tongue weight. The factory number usually does not include anything from the loaded weight, including propane tanks, fresh and waste water, etc. I'd probably figure you are hauling 500 pounds.
That is a pretty small travel trailer, what truck do you have that is having issues with that load?
Biggest issue I think you will find is the mirrors are not great, you probably want to look at some aftermarket mirrors to see around the trailer.
My Silverado would probably hardly notice that trailer, but I would have been comfortable with my Canyon towing the trailer you are describing, with aftermarket mirrors.