GMC 2007 Sierra 1500 Pickup Owner's Manual page 436

K-1500 Extended Cab
Short Box (4WD)*
5300 V8
*This model is neither designed nor intended to tow fifth-wheel or gooseneck trailers.
K-1500 Crew Cab Short
Box (4WD)*
5300 V8
6000 V8
*This model is neither designed nor intended to tow fifth-wheel or gooseneck trailers.
K-1500 Regular Cab
Long Box (4WD)*
4300 V6 (Auto)
4300 V6 (Manual)
4800 V8
5300 V8
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg)
maximum.
*Fifth-wheel or gooseneck trailer rating limited to 8,300 lbs (3 765 kg).
436
Axle Ratio Maximum Trailer Weight
3.42/3.73 7,700 lbs (3 493 kg)
4.10 8,700 lbs (3 946 kg)
Axle Ratio Maximum Trailer Weight
3.42 7,400 lbs (3 357 kg)
3.73 7,400 lbs (3 357 kg)
4.10 8,400 lbs (3 810 kg)
4.10 9,900 lbs (4 491 kg)
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)
3.73 6,900 lbs (3 130 kg)
4.10 7,900 lbs (3 583 kg)
3.42 7,900 lbs (3 583 kg)
3.73 7,900 lbs (3 583 kg)
4.10 8,900 lbs (4 037 kg)
GCWR
13,000 lbs (5 902 kg)
14,000 lbs (6 350 kg)
GCWR
13,000 lbs (5 897 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)
15,500 lbs (7 031 kg)
GCWR
10,000 lbs (4 536 kg)
9,000 lbs (4 082 kg)
12,000 lbs (5 443 kg)
12,000 lbs (5 443 kg)
13,000 lbs (5 897 kg)
13,000 lbs (5 897 kg)
13,000 lbs (5 897 kg)
14,000 lbs (6 350 kg)