the book statement is below and with 2 people 2,000 is the limit unless you are going to modifications like an external transmission cooler.
It should never weigh more than 1,400 Ibs. (630 kg) with
up to six occupants in the vehicle or more than
2,000 Ibs. (900 kg) with up to two occupants. If you
have the optional trailer towing package, your vehicle
can tow up to 2,900 Ibs. (1 300 kg) with up to six
occupants or up to 3,500 Ibs. (1 575 kg) with up to two
occupants. If you have the Thunder, your vehicle
can tow up to 2,600 Ibs. (1 180 kg) with up to six
occupants or up to 3,200 Ibs. (1 410 kg) with up to two
occupants. But even that can be too heavy.
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to pull
a trailer are all important. And, it can also depend
on any special equipment that you have on your vehicle.