Aren't Tahoe's soft in the rear?
The tongue on that thing will be close to 900 lbs. loaded properly.
You've only got 1,800 lbs. payload, so that leaves you 800 lbs. for passengers and stuff inside the Tahoe. That's not much, but doable.
A Class IV hitch
A really good 1,000 lb. WDH
Air bags on the Tahoe
A P2 or P3 brake controller (my favorite)
New GOOD shocks, front and rear, if the ones are original.
Check your brake pads, too. I always bought aftermarket high performance pads for my trucks. I liked the all metallic ones.
You will also want to consider a tranny cooler. The factory one isn't up to snuff for hard, long pulls.
A scan guage is another great add, too. You can monitor temps and find that "sweet spot" for gas mileage, which you'll be getting very little of!
I hope this helps.
Me, Julie, Lil' Barry, Faith, and OSDs, Fang and Treaty
2003 Hyundai Starex (H1), 2012 Coachmen Clipper 126
I don't know when we'll be able to go camping again...