Chevrolet 2005 Silverado 1500 Pickup Owner's Manual page 364

Vehicle*
C-1500 Crew Cab (2WD)*
5300 V8
Fifth-wheel or gooseneck trailering is neither designed nor intended for this vehicle
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.
4-74
Axle Ratio Maximum Trailer Weight
3.23 6,700 lbs (3 039 kg)
3.73 7,700 lbs (3 493 kg)
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)
GCWR
12,000 lbs (5 443 kg)
13,000 lbs (5 897 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)