To find the exact towing capacity for *your* specific 1998 Chevy Suburban K2500, you should:
* Check the sticker: Look for a sticker on the driver's side doorjamb or the glove compartment. This sticker will list the GVWR (Gross Vehicle Weight Rating), payload capacity, and towing capacity. This is the most reliable source.
* Consult the owner's manual: Your owner's manual will also specify the towing capacity for your specific configuration.
Without knowing the specific configuration of your vehicle, I cannot provide a definitive answer. However, expect the towing capacity to be in the range of 8,000 to 10,000 pounds but this is just an estimate and could be higher or lower.