Your owners manual will contain the answer. If you don't have one, a salvage yard is a good place to find one. You can also order one from your local dealer. I've got the same question, but I know a few more variables. Engine size and rear differential ratio will affect towing capacity. So will other payload within the vehicle. I've seen 6000-7500 lbs listed on other sites, so there's a range of possibles. I got this from the Chevy website. They have vehicles specs archived back to 1996
Suburban 1500 2WD 350 CID V-8:
Curb Weight - 4820
CVWR - 7700
Payload - 1980
Max Trailer - 6500
Suburban 2500 2WD:
Curb Weight - 5286
CVWR - 8600
Payload - 3314
Max Trailer - 10000
The 350 has 255 HP and 330 ft-lbs. 6500-7000 lbs trailer sounds like about all you'd want to try with it.
Towing capacity: 3,674kg (8,100lbs)
mmcda
7500lbs
about 8200/8400 lbs
A Chevrolet Suburban 1500 will have about 4000 LBs (about 2200 KG) towing capacity.
The listed 1996 GMC suburban K 1500 towing capacity is 7500 pounds. Towing more than 7500 pounds will void the warranty.
6000lbs
10,400 lb
The towing capacity for a 2003 Chevy Silverado 1500 is 8400-pounds with Quadrasteer and Quadrasteer increases the towing capacity of Silverado 1500 with the Vortec 5300 to 8600 lbs or 10,200 pounds with a weight-distributing hitch and sway control.
The 1500 has a towing capacity of 8100 lbs in 4WD, or 8400 with two-wheel drive. 2500 models can tow up to 12,000 lbs.
5000LBS
4000lb