In the GM specs, the LM2 has the same GCWR (15,000) with 3.23 and 3.73 (which is available with the diesel off-road package) --- so diff ratio isn't what they consider the limiting factor.I’m towing a large (37’) tt. Getting 11 mpg on my LT short bed. Right up real close to GCWR. Concerned that I may need a bigger truck. Got E rated tires and timbres SES. Using a Hensley hitch so there’s no sway, BUT you KNOW that trailer is back there. Any thoughts on this? Would Airbags make a difference? Truck hasn’t struggled to tow or stop in normal situations. It’s not a rocketship, but it’s not a dog either. Thoughts on this? Thinking if I keep it to do a Banks Derringer a Titan fuel tank (if and when they become available) and maybe airbags? Wondering about the 3.23 rear and if that’s a problem. What benefit to move to 3.42 or 3.73?
Might also depend on how far and how often you tow as well as what kind of grades and traffic.