1999 chevy suburban

Sounds like you could be overweight, unless the Suburban is a 2500 model and not the standard 1500 model. Also, a vehicle with 190K miles and 15 years old may be problematic, depending on condition. I have a 2012 Avalanche, which is basically a Suburban with the back end modified into a truck bed. It has the standard 5.3L engine. I was worried about towing my new 2014 Bullet, which is 28' long, one slide and is 5200 lbs dry weight. However, it seems to work pretty well so far in the two trips I've taken. But yours would be significantly heavier being 32' long and two slides. I would not want to tow anything heavier than mine. Also depends on how many people and other cargo will be in the Suburban....