i pull my 2 sleds with a 2003 gmc yukon slt with the 5.3 V-8, and a 2005 karavan 2 place tilt trailer. the truck pulls the sleds and trailr like they arent even there. I like the tow/haul mode in gm's trucks, it really works great.
2003 pro-x 700 mod;
TracksUSA 144" tip-up rail extensions
1.25 camoplast predator /120 1.40' extreme max SS studs
VanAmburg tunnel extension
SLP Powder-Pro skis, Powder-Coated suspension
tempaflow-420 main jets
10-64 weights w/ round almond spring
24/42 gearing, gutted airbox, PERC, torque arm