I have a, new to me,1999 WildernessGL 26H has a MGVW of 8600 and a Max dry wt of 6200.I don't know the tongue wt. yet.. I pull it with a1999 Yukon, SLT 5.7 (350) which has a tow capacity of 6500.. I...
Think about this: You will be towing 1000 pounds over the vehicle's ratings when it was new 15 years ago. You better be very intimate on the condition of the Tahoe. Brakes, tires, springs, bushings, steering rack, etc.