GMC 2004 Sierra 1500 Pickup Owner's Manual page 381

Vehicle*
6.6L V8 Single Rear
Wheel
K-3500 Extended Cab (4WD)*
6000 V8 Dual Rear
Wheel
6000 V8 Single Rear
Wheel
8100 V8 Dual Rear
Wheel
8100 V8 Single Rear
Wheel
6.6L V8 Diesel Dual
Rear Wheel
6.6L V8 Diesel Single
Rear Wheel
* 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.
Axle Ratio Maximum Trailer Weight
3.73 12,000 lbs. (5 443 kg)
4.10 9,500 lbs. (4 309 kg)
4.10 9,700 lbs. (4 399 kg)
4.10 12,000 lbs. (5 443 kg)
4.10 12,000 lbs. (5 443 kg)
3.73 12,000 lbs. (5 443 kg)
3.73 12,000 lbs. (5 443 kg)
GCWR
22,000 lbs. (9 979 kg)
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)
22,000 lbs. (9 979 kg)
4-85