Sticker would be best, for info on this particular vehicle. But Dodge website shows 4510lbs base curb weight, and 6050lbs GVWR. Since that 4510 is shown for all models, I'm assuming that the absolute lightest Grand Caravan available, with no added packages nor options. So the difference (CCC) of 1540 lbs is certainly on the high side.
My '97 and '00 Chrysler vans had 8300 lbs GCVWR. mid-2000 went up to 8600, and I believe the most recent generations are at:
9000 lbs GCVWR
3600 lbs MAX tow rating
Put a 3600 lbs trailer behind this vehicle, and you have 5400 lbs available for the loaded van. That's 900 lbs over curb weight. Add however much you want for options and the driver, and you'll still have some left over.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller