If you find the ; weight sticker; in your coach , it will list , trailer tow rating, and GCWR. ( Gross Combined Weight Rating ) The GCWR is the weight of the coach and trailer; or toad the manufacturer states the chassis and drive line will handle safely.
Weight sticker looks like the picture below, usually in a cupboard or closet , and the pdf has the trans ratings.
Edit : pdf , didn't come through , the two attachments may have been over the limit , I'll try again.
RE-edit ; The document is too large , I'll see if the document can be broken down.
Re-re-edit ; I can't pull the page , but here's the info.
2500 series ratings , 340 HP; 700 FtLbs torque , and 33,000 Lbs GCW.
So you need your coach weight and the , hitch rating and the weight of the truck.
Coach and truck have to be under 33,000 Lbs ; and truck weight has to be under the hitch rating and the , trailer tow capacity listed on the weight sticker.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.