Spec’s for GM 3500 gas 6.6 crew cab 2wd, 4wd is 18,300 max Denali drops to 17,900lbs. I have been towing right at 16,000lbs with 2014 3500 SRW, CC, duramax for 8 years.
Weight would not cause me as much concern as the gas engine would.
Sent from my iPhone using Tapatalk