6000 to 7000 lbs is the normal capacity, but it should be rated up to 9000 lbs, that would give you a tongue weight 4000 lbs heavier, you wouldn't want to go there very often.
My manual from the same type of truck says 9900Lbs, with a proper trailering package. Note: this is for the 1500HD not the 1500.
Maximum Towing Capacity: 8500.00 lbs.
34 GALS.
The towing capacity on a 1995 Chevrolet Silverado 1500 Z71 is close to 4,000 pounds. The amount will vary slightly for each vehicle.
The maximum towing capacity of this 1999 Chevrolet Silverado 1500 is 5,000 pounds. However, a limit of 3,500 pounds is recommended.
The 2001 Chevrolet Silverado-1500 has 12 valves.
The 2011 Chevrolet Silverado-1500 has a V6 engine.
The 2008 Chevrolet Silverado-1500 has 12 valves.
The 2008 Chevrolet Silverado-1500 has a V6 engine.
The 2007 Chevrolet Silverado-1500 has a V8 engine.
The 2013 Chevrolet Silverado-1500 has a V6 engine.
The 2014 Chevrolet Silverado-1500 has a V6 engine.