GMC 2002 Sierra - Manual (Page 312)

4-83
K - 3500 Crew Cab (4WD)*
Engine Axle Ratio Max. Trailer Wt. GCWR
6000 V8 4.10 9,300 lbs. (4 222 kg) 16,000 lbs. (7 264 kg)
8100 V8 4.10 12,000 lbs. (5 448 kg)** 22,000 lbs. (9 988 kg)
6.6L V8 Diesel 3.73 12,000 lbs. (5 448 kg)** 22,000 lbs. (9 988 kg)
* Weight - distributing hitch tongue weight 10 percent to 15 percent of hitch weight 1,200 lb. (544 kg) maximum.
Fifth - wheel hitch tongue weight 15 percent to 25 percent of hitch weight 2,500 lb (1 134 kg) maximum.
** Fifth wheel hitch rating; weight distributing hitch rating is limited to 12,000 lbs. (5 443 kg).