2004 GMC Sierra 1500 Pickup Owner's Manual - Page 380

Vehicle* Axle Ratio Maximum Trailer Weight GCWR C-3500 Extended Cab (2WD) 6000 V8 4.10 9,800 lbs. (4 445 kg) 16,000 lbs. (7 257 kg) 8100 V8 4.10 15,400 lbs. (6 985 kg)** 22,000 lbs. (9 979 kg) 6.6L V8 Diesel 3.73 15,200 lbs. (6 894 kg)** 22,000 lbs. (9 979 kg) C-3500 Crew Cab (2WD)* 6000 V8 4.10 9,600 lbs. (4 354 kg) 16,000 lbs. (7 257 kg) 8100 V8 4.10 15,200 lbs. (6 894 kg)** 22,000 lbs. (9 979 kg) 6.6L V8 Diesel 3.73 15,000 lbs. (6 803 kg)** 22,000 lbs. (9 979 kg) *Fifth-wheel or gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,500 lbs. (1 587 kg) maximum. ** Limited to 12,000 lbs. (5 443 kg) with weight distributing hitch. Vehicle* Axle Ratio K-3500 Regular Cab (4WD) 6000 V8 Dual Rear 4.10 Wheel 6000 V8 Single Rear 4.10 Wheel 8100 V8 Dual Rear 4.10 Wheel 8100 V8 Single Rear 4.10 Wheel 6.6L V8 Dual Rear 3.73 Wheel 4-84 Maximum Trailer Weight 9,900 lbs. (4 490 kg) 10,100 lbs. (4 581 kg) 12,000 lbs. (5 443 kg) 12,000 lbs. (5 443 kg) 12,000 lbs. (5 443 kg) GCWR 16,000 lbs. (7 257 kg) 16,000 lbs. (7 257 kg) 22,000 lbs. (9 979 kg) 22,000 lbs. (9 979 kg) 22,000 lbs. (9 979 kg)