* Transmission: Automatic or manual transmission affected capacity.
* Axle Ratio: Higher axle ratios generally allow for greater towing capacity.
* Equipment: Options like a towing package significantly impacted the maximum weight.
Therefore, there's no single answer. To find the precise towing capacity for *your* specific 1998 Chevy Silverado 1500, you need to check the sticker on the driver's side doorjamb. This sticker will list the GVWR (Gross Vehicle Weight Rating), and often the towing capacity specific to your truck's configuration.
Alternatively, you can consult your owner's manual. This will also give you the correct information for your truck.
