Tgator1 wrote:
Truck: '13 Chevy 2500HD, cc, sb, 4X4, SRW, Dmax, Allison. Stock suspension, but will upgrade to Timbrens, and may look into air bags.
Looking at KZ Durango Gold G359RET: UVW 10640, dry hitch 2190, dry axle 8450, NCC 2960, GVWR 13600.
Hitch is a Reese 20k slider.
AS was suggested I wouldn't do a thing to the truck until you get it hooked up and make a short trip just to see how the truck looks/handles.
If it has more squat than you like then is the time to add rear suspension help (Timbrens/bags/Supersprings/etc).
Many 2500 GM trucks with the Dmax/A will have the 18" higher rated tires and wheels so no worries there unless your into 15k-17k lbs trailers..
I seriously doubt a '13 2500 GM will need any suspension help with that size trailer.