Got some better specs for the TT:
- 3455 Dry Weight (No battery, propane, spare, water, or waste).
- 380 pound Dry Tongue Weight
- 5000 Max Gross Weight
So that brings me to a predicted 750 pound loaded tongue weight (15%). Not bad for my eyeball estimate.
For the Tahoe, from Trailer Life:
- 7400 pound Max Trailer (w/5.3, 3.73. and 4WD)
- WD and sway control required over 5000 pounds
The Tahoe is "well optioned" so taking off, leather, etc., it should be able to handle a 5000 pound trailer.
Seems close to the edge though, so going to have to weigh it to confirm.
(Edited to include correct max trailer for the TV)