I have towed the following, 28 Sonic with 3/4 ton 4wd Yukon XL and a 1997 crew cab dually. Not much difference. Also have towed Formula F311 with both trucks. Big difference! Now tow 43 foot BlackThunder with the dually. Glad I have electric/hydraulic disc brakes on all three axles. Make sure your new truck has disc brakes on front and rear. The older Chevy's with rear drums don't work very well. I have a 3/4 ton 4wd 2002 Yukon for sale now. Tow rating of 12K #.E-mail me at [email protected] for details if you are interested.