nickthehunter wrote:
3:42 is not ideal, it will struggle at times, however, it will work alright with that trailer for a while. You'll be within 100 lbs of your payload rating so for better towing performance, plan on traveling with the tanks empty. A 3.73, 4.10 or something along those lines would be a lot better, but that's probably a $1500.00± cost (if even available).
3.42 IS the tow rated gears with a 2017 Tahoe, there is no higher gear available. Even in 2018 only the max trailering package for the 1500 has the 3.73 and that's if you need more than ~9,000lb of tow rating, unlikely for a TT given the payload limits of the 1500. A 3.42 on the 6 speed is between the 3.73 and 4.10 on the old 4 speed, on the 8 speed it's really close to the 4.10. I wouldn't want the 3.08 for towing in hills or mountains but 3.42 with either transmission is fine.
