I'm towing with a 2010 Ram 1500 Crew Cab TRX-4 (off-road package). Purchased it "used" in March of 2014, with 36,000 miles. Engine is the 5.7L Hemi, 3.92 rear axle ratio, a 5-speed automatic transmission with the tow/haul function, and 17" tires (yes, tire size can affect towing and handling). Sales staff "assured" me it was rated to tow 10,250#, but Dodge/Ram websites rate it a bit lower. Our TT is a White Hawk Ultra Lite 27DSRB by Jayco, 31' long, with a dry weight listed at 6,080#. Never have put it on the scales, but I'm guessing we're well over 8,000#.
Had to replace the truck's transmission, torque converter and tranny cooler in July of this year, after the transmission overheated and shut down while backing the camper up our driveway. Dodge mechanics found metal shavings in the transmission fluid. My personal opinion is that, while Ram trucks have a reputation for transmission/drive train failures, this damage was probably done prior to my taking ownership, based on clues found by the technicians doing the inspection and work. This replacement drive train has performed well for the rest of the summer and fall. The transmission specialists advised me to always use the tow/haul switch while towing, and not to be shy on the gas pedal, pushing the tachometer into the 3,000 and 4,000 rpm ranges to maintain speed and power torque on the hills. Towing at lower rpms and speeds does not allow the transmission fluid to circulate through the auxiliary cooler enough to adequately protect the system, leading to overheating, shut-down, and/or permanent damage.
Wil, Tara, Keeko (Jack Russel/Chihuahua mix 9 yr.-old) and Kalee (Wire Hair Terrier/Blue Heeler mix 1 yr. old)
2018 Rockwood Ultra-Lite 2702; 2014 Dodge Ram 1500 Big Horn Crew Cab 5.7L Hemi w/ 3.92 rear axle