I guess what I don't understand is a 2500HD diesel can pull it, then why isn't a 2500hd gasser equally as capable with a 4:10 as the tow capacity is significantly increased with a 4:10. Below is the data from Chevy with a 4:10. Changing gears is less expensive than a new truck.
Max 5th Wheel Trailering, 4.10 Rear Axle (lbs.) 20500
Rear Gross Axle Weight Rating (lbs.) 6200
GCWR, 4.10 Rear Axle (lbs.) 20500
GVWR (lbs.) 9500 9900
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