GMC 2005 Sierra 1500 Pickup Owner's Manual page 368

Vehicle*
K-1500 Regular Cab Short Box (4WD)
4300 V6 (Auto)
4300 V6 (Manual)
4800 V8 (Auto)
4800 V8 (Manual)
5300 V8
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up
to 1,500 lbs (680 kg) maximum.
Vehicle*
K-1500 Extended Cab Short Box (4WD)*
4800 V8 (Auto)
4800 V8 (Manual)
5300 V8
5300 V8 w/4WS
**Maximum weight 7,700 lbs (3 492 kg) for fifth-wheel or gooseneck.
4-74
Axle Ratio Maximum Trailer Weight
3.73 5,100 lbs (2 313 kg)
3.73 4,100 lbs (1 860 kg)
3.42 7,000 lbs (3 175 kg)
4.10 8,000 lbs (3 629 kg)
3.42 5,000 lbs (2 268 kg)
4.10 6,000 lbs (2 722 kg)
3.42 8,000 lbs (3 629 kg)
4.10 9,000 lbs (4 082 kg)
Axle Ratio Maximum Trailer Weight
3.42 6,700 lbs (3 039 kg)
4.10 7,700 lbs (3 493 kg)**
3.42 4,700 lbs (2 132 kg)
4.10 5,700 lbs (2 585 kg)
3.42 7,700 lbs (3 493 kg)**
4.10 8,700 lbs (3 946 kg)**
3.42 7,300 lbs (3 311 kg)
4.10 8,300 lbs (3 765 kg)
GCWR
10,000 lbs (4 540 kg)
9,000 lbs (4 086 kg)
12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)
10,000 lbs (4 540 kg)
11,000 lbs (4 994 kg)
13,000 lbs (5 902 kg)
14,000 lbs (6 356 kg)
GCWR
12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
10,000 lbs (4 535 kg)
11,000 lbs (4 990 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)