Originally Posted by Martiangod
when towing, are you running door sticker tire pressure are upping to rated pressure on tires?
Another overlooked issue could be trailer wheel alignment, every trailer ive sent to truck alignment shop had needed corrections and took sway away after corrections
Since I switched tires to 6 ply rated LT tires I upped the pressure to the maximum 50 PSI while towing, 40 unloaded. I haven't thought about having the axles aligned which might not be a bad idea to have it checked but it did tow well with the '02 Silverado 1500 that I put an extra leaf in the middle of the spring pack.
I am going to readjust my WDH, I think I might have it a little tight, the front of the truck is down about 1/2 inch from unloaded and I just looked in the manual and it say's to split the difference between unloaded and trailer on with no WDH.
I haven't towed fully loaded yet, the trailer is only about 5700 lbs. and it will weigh about 6500 fully loaded.