GMC Sierra 2005 Owner's Manual page 373

Vehicle*
K-2500 Extended Cab Short Box HD (4WD)*
6000 V8
8100 V8
6.6L V8 Diesel
*Fifth-wheel or gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,000 lbs
(1 361 kg) maximum.
Vehicle*
K-2500 Extended Cab Long Box HD (4WD)*
6000 V8
8100 V8
6.6L V8 Diesel
K-2500 Crew Cab Short Box HD (4WD)*
6000 V8
8100 V8
6.6L V8 Diesel
*Fifth-wheel or gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 3,300 lbs
(1 361 kg) maximum.
Axle Ratio Maximum Trailer Weight
4.10 10,000 lbs (4 536 kg)
3.73 12,000 lbs (5 443 kg)
4.10 12,000 lbs (5 443 kg)
3.73 12,000 lbs (5 443 kg)
Axle Ratio Maximum Trailer Weight
4.10 9,900 lbs (4 490 kg)
3.73 12,000 lbs (5 443 kg)
4.10 12,000 lbs (5 443 kg)
3.73 12,000 lbs (5 443 kg)
4.10 9,800 lbs (4 445 kg)
3.73 12,000 lbs (5 443 kg)
4.10 12,000 lbs (5 443 kg)
3.73 12,000 lbs (5 443 kg)
GCWR
16,000 lbs (7 257 kg)
20,000 lbs (9 072 kg)
22,000 lbs (9 979 kg)
22,000 lbs (9 979 kg)
GCWR
16,000 lbs (7 257 kg)
20,000 lbs (9 072 kg)
22,000 lbs (9 979 kg)
22,000 lbs (9 979 kg)
16,000 lbs (7 257 kg)
20,000 lbs (9 072 kg)
22,000 lbs (9 979 kg)
22,000 lbs (9 979 kg)
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