My 1997 4x4 GMC 2500 Suburban with 454V-8, pulls my 14K trailer with L48 TLB aboard (7700 lbs. book wt.).
I did add an air lift suspension kit.
I weigh before any use, and have a personal limit of 12,000 lbs. My empty trailer weighs 3,500 lbs.
Total towed weight= 11,200, plus added thumb, and...