* Model: Was it a Silverado, C/K series, or another model? Even within those lines, there were many variations (1500, 2500, 3500 series, different cab configurations, etc.).
* Engine: Different engines added or subtracted weight.
* Options: Features like power options, towing packages, and additional equipment all affected the curb weight.
To find the curb weight of a *specific* 1998 Chevrolet truck, you would need to find the original sticker (window sticker) or the owner's manual for that particular vehicle. Alternatively, you could consult a resource like a 1998 Chevrolet truck brochure or a vehicle specifications database (some are online but may require a subscription).