Sure you will get a lot more comments on this but here is what I've got. Note that I am not a member of the weight police nor do I play one on TV.
It looks like the tow rating of 8500 lbs. would be with the (no payload) curb weight of the tow vehicle. The GCWR for the Tahoe (3.5L, 3.42 Axle, Max Tow Pkg.) is 14,000 lbs. minus the 8500 only leaves 5500 lbs. for the TV. "Okay everybody, put on your MC Hammer pants and fill them with helium." Actually, even helium wouldn't help since GCWR is really a combined mass rating. The Passport 2400BH has a 6800 GVWR so 14,000 minus the 6800 leaves about 7200 lbs. which is about the GVWR of the Tahoe so that checks.
The trailer is over 5000 GVWR so you will need a distribution hitch. The Passport 2400BH has a (dry?) hitch weight of 515 lbs. (10% of trailer GVWR would be 680, 13% is 884) and the ball mount, distribution, and sway control adds to that so your TV would see about 750 lbs of vertical payload from the trailer and hitch equipment (about three light HS football players.) The 1750 lb. payload capacity of the Tahoe (might be less) would leave you with about 1000 lbs. for your family, fuel, and anything not stowed in the trailer.
Long story short, it looks like you are okay since the Chevy Tahoe is basically an SUV body on a half ton truck frame. I have read elsewhere that the shorter wheelbase is okay as long as everything is hitched up level and you have good sway control. A weight distribution hitch (with sway control) is a must and you are close enough that you will want to find a scale to make sure the final numbers are correct. You also have about 2000 lbs. of trailer payload to play with to either travel light or rebalance as required.