GMC 2006 Sierra 1500 Pickup Owner's Manual page 394

Vehicle*
K-3500 Crew 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 Single
Rear Wheel (Auto)
6.6L V8 Diesel Single
Rear Wheel (Manual)
6.6L V8 Diesel Dual
Rear Wheel (Auto)
6.6L V8 Diesel Dual
Rear Wheel (Manual)
*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.
Fifth-wheel or gooseneck GCWR for 6.6L V8 Diesel 3500 SRW series models is 23,200 lbs (10 523 kg).
4-82
Axle Ratio Maximum Trailer Weight
4.10 9,200 lbs (4 173 kg)
4.10 9,400 lbs (4 264 kg)
4.10 12,000 lbs (5 443 kg)
4.10 12,000 lbs (5 443kg)
3.73 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 (7 264 kg)
16,000 lbs (7 264 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)
23,500 lbs (10 659 kg)
23,500 lbs (10 659 kg)