The new 2021 Tahoe is just hitting dealerships, 3 engine options, 5.3L, 6.2L and a 3L I6 Turbo Diesel. It’s a very nice looking truck.
All 3 have the 10 speed tranny, and would be more than capable of towing a ski boat. The Diesel is very intriguing with as much torque (460 lb-ft) as the 6.2.