The towing capacity of a 2000 Chevy S-10 Blazer depends heavily on the engine and whether it's a 2WD or 4WD model. There's no single answer. You
must consult your owner's manual for the precise towing capacity for your specific vehicle. The information sticker on the driver's side doorjamb may also list the towing capacity.
Without that information, any number given would be unreliable and potentially dangerous. Towing beyond your vehicle's capacity can damage your truck and is unsafe.