GMC 2002 Sierra - Manual (Page 299)

4-70
C - 1500 Extended Cab Long Box (2WD)*
Engine (Trans.) Axle Ratio Max. Trailer Wt. GCWR
4800 V8 (Auto) 3.42 6,000 lbs. (2 724 kg) 11,000 lbs. (4 994 kg)
3.73 7,000 lbs. (3 178 kg) 12,000 lbs. (5 448 kg)
4800 V8 (Manual) 3.42 4,000 lbs. (1 816 kg) 9,000 lbs. (4 086 kg)
3.73 5,000 lbs. (2 270 kg) 10,000 lbs. (4 540 kg)
5300 V8 3.42 7,000 lbs. (3 178 kg) 12,000 lbs. (5 448 kg)
3.73 8,000 lbs. (3 632 kg) 13,000 lbs. (5 902 kg)
* Weight - distributing hitch tongue weight 10 percent to 15 percent of hitch pulling weight 1,000 lb. (454 kg) maximum.
Fifth - wheel hitch tongue weight 15 percent to 25 percent of hitch pulling weight 1,500 lb (680 kg) maximum.