The tow ratings for the 2013 Chevy Silverado-Sierra 1500 series are 9,100 pounds for the two-wheel drive regular cab standard box with a 5.3-liter V-8 engine and 8,900 pounds for the four-wheel drive regular cab standard bed with the same type of engine. Both vehicles are equipped with a 3.42:1 axle ratio and towing package.
The towing capacity of the Silverado-Sierra 1500 two-wheel drive regular cab long box installed with a 5.3-liter V-8 engine, 3.42:1 axle ratio and towing package is 10,000 pounds. Its four-wheel drive counterpart, which is equipped with the same engine type but with a 3.41:1 axle ratio and cooling package, has a tow rating of 9,800 pounds.
In the 2500 series of the Silverado-Sierra trucks equipped with a 6-liter V-8 engine, the towing capacity for both the two-wheel drive and the four-wheel drive regular cab long bed is 13,000 pounds. Both vehicles are fitted with a 4.10:1 axle ratio. The Silverado-Sierra 2500 two-wheel drive and four-wheel drive extended cab standard box with a 6.6-liter V-8 engine and 3.73:1 axle ratio, also have a towing capacity of 13,000 pounds.
In the 3500 class, the tow rating of the two-wheel drive extended cab long bed DRW with a 6-liter V-8 engine is 13,600 pounds, while the tow capacity of the four-wheel drive is 13,400 pounds. Both trucks have a 4.10:1 axle ratio.