GMC Sierra 2005 Owner's Manual page 370

Vehicle*
K-1500 Regular Cab Long 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.
**Maximum weight 8,900 lbs (4 036 kg) for fifth-wheel and gooseneck.
Vehicle*
K-1500 Extended Cab Long Box (4WD)*
4800 V8
4800 V8 (Manual)
5300 V8
*Fifth-wheel or gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to
1,500 lbs (680 kg) maximum.
**Maximum weight 6,800 lbs (3 084 kg) for fifth-wheel and gooseneck.
4-76
Axle Ratio Maximum Trailer Weight
3.73 5,000 lbs (2 268 kg)
3.73 4,000 lbs (1 814 kg)
3.42 6,900 lbs (3 130 kg)
4.10 7,900 lbs (3 583 kg)
3.73 4,900 lbs (2 223 kg)
4.10 5,900 lbs (2 676 kg)
3.73 7,900 lbs (3 583 kg)
4.10 8,900 lbs (4 037 kg)**
Axle Ratio Maximum Trailer Weight
3.42 6,600 lbs (2 993 kg)
4.10 7,600 lbs (3 447 kg)**
3.42 4,600 lbs (2 087 kg)
4.10 5,600 lbs (2 540 kg)
3.42 7,600 lbs (3 447 kg)**
4.10 8,600 lbs (3 900 kg)**
GCWR
10,000 lbs (4 536 kg)
9,000 lbs (4 082 kg)
12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
10,000 lbs (4 536 kg)
11,000 lbs (4 990 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
GCWR
12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
10,000 lbs (4 536 kg)
11,000 lbs (4 990 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)