This is really simple. The issue comes that every truck is going to have different payload and max tow numbers.
Payload is GVWR minus Base weight.
Max tow...if you have more than 300 lbs of passenger. If you plan to haul anything else...even just a flashlight. It will never be achieved. It is a silly number that needs not even be thought of.
GCWR determines what the max is you can tow.
Fortunately all Rebels have 3.92. So we only need to discuss one GCWR.
GVWR will be 7100. GCWR will be 17000.
Now, I know the Ecodiesel gets 7200 for 2020. And if you have 2wd it will be 6900.
So. Now if you have your truck, look at the payload on the door.
As
@2019REBEL said his is 1478.
So we will use his truck.
7100 minus 1478 is a base weight of 5622.
So his truck weighs 5622 pounds with no passengers or cargo and this is with a full tank of gas.
So, 17000 minus 5622 is 11378.
11378 is the total you can haul/tow. The truck has to stay under 7100 lbs with passengers, cargo, hitch, and tongue weight.
With the 11378 number...your max tow then becomes how little you load the truck.
Make sense. Very easy. 2 numbers are a constant...GCWR 17000 and GVWR 7100.
Payload and tow rating change by the individual.
CAT scale trip. Load your truck and head here. That will give you your specific weight. Then stay under 17000 with trailer and tongue weights. Very easy.
Each truck is different. Each owner/family is different.