GMC Sierra 2005 Owner's Manual page 375

Vehicle*
K-3500 Regular 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 Dual Rear
Wheel (Auto)
6.6L V8 Dual Rear Wheel
(Manual)
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 (Manual)
6.6L V8 Diesel Dual Rear
Wheel (Auto)
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
4.10 9,800 lbs (4 445 kg)
4.10 10,000 lbs (4 536 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)
3.73 12,000 lbs (5 443 kg)
4.10 9,400 lbs (4 264 kg)
4.10 9,600 lbs (4 354 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)
3.73 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)
23,500 lbs (10 659 kg)
23,500 lbs (10 659 kg)
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)
23,500 lbs (10 659 kg)
23,500 lbs (10 659 kg)
22,000 lbs (9 979 kg)
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