So factory says 5100-6400lbs depending on trim level. But I wouldn’t tow a camper that weighed any more than 5000lbs due to the wind resistance you feel. I towed over 9000lbs of flat stock steel like nothing but my 16ft camper that weighs 5000lbs fee...
I tow a 5000lb camper with my 3.7. And everything is true. Very rarely do I see 5th and 6th gear. Usually 4th at 3000 rpm and 3rd or even 2nd on some hills at 6500 rpm.
