GMC 2005 Sierra 1500 Pickup Owner's Manual page 367

Vehicle*
C-1500 Regular Cab Long Box (2WD)*
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*
C-1500 Extended Cab Long Box (2WD)*
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.
Axle Ratio Maximum Trailer Weight
3.23 4,800 lbs (2 177 kg)
3.23 3,800 lbs (1 724 kg)
3.23 6,200 lbs (2 812 kg)
3.73 7,200 lbs (3 266 kg)
3.23 4,200 lbs (1 905 kg)
3.73 5,200 lbs (2 359 kg)
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)
3.23 3,800 lbs (1 724 kg)
3.73 4,800 lbs (2 177 kg)
3.23 6,800 lbs (3 084 kg)
3.73 7,800 lbs (3 538 kg)
GCWR
9,500 lbs (4 313 kg)
8,500 lbs (3 859 kg)
11,000 lbs (4 994 kg)
12,000 lbs (5 448 kg)
9,000 lbs (4 086 kg)
10,000 lbs (4 540 kg)
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)
9,000 lbs (4 086 kg)
10,000 lbs (4 540 kg)
12,000 lbs (5 448 kg)
13,000 lbs (5 902 kg)
4-73