You can find that info in our "Resources" section of this website:
This is what it says about a 2002 2WD 2500 AV:
Payload & Towing Towing Capacity with 3.73 Axle 10,400 pounds
Towing Capacity with 4.10 Axle 12,000 pounds
Standard Payload 2,247 pounds
Gross Vehicle Weight (GWV) 8,600 pounds
Gross Combination Weight Rating (GCWR): 17,000 pounds
You can also check for 4wd avalanches:
Towing Capacity with 3.73 Axle 10,100 pounds
Towing Capacity with 4.10 Axle 12,000 pounds
Standard Payload 1,958 pounds
Gross Vehicle Weight (GWV) 8,600 pounds
Gross Combination Weight Rating (GCWR): 17,000 pounds
It also has other years, It also has copies of the owner's manuals and other info too.
I hope this helps you.