GMC Sierra Classic 2007 Owner's Manual page 428

C-1500 Regular Cab
Long Box (2WD)*
5300 V8
*Fifth-wheel or gooseneck kingpin weight 15 percent to 25 percent of trailer weight up to 1,500 lbs (680 kg)
maximum.
C-1500 Extended Cab
Long Box (2WD)*
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 7,600 lbs (3 447 kg).
K-1500 Regular Cab
Standard Box (4WD)*
4300 V6 (Auto)
4300 V6 (Manual)
4800 V8
428
Axle Ratio Maximum Trailer Weight
3.23 7,200 lbs (3 266 kg)
3.73 8,200 lbs (3 719 kg)
Axle Ratio Maximum Trailer Weight
3.23 5,800 lbs (2 631 kg)
3.73 6,800 lbs (3 084 kg)
3.42 6,800 lbs (3 084 kg)
3.73 7,800 lbs (3 538 kg)
Axle Ratio Maximum Trailer Weight
3.73 5,100 lbs (2 313 kg)
3.73 4,100 lbs (1 860 kg)
3.42 7,100 lbs (3 221 kg)
3.73 7,100 lbs (3 221 kg)
4.10 8,100 lbs (3 674 kg)
GCWR
12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)
GCWR
11,000 lbs (4 994 kg)
12,000 lbs (5 448 kg)
12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)
GCWR
10,000 lbs (4 540 kg)
9,000 lbs (4 086 kg)
12,000 lbs (5 448 kg)
12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)