To find the *exact* towing capacity for a specific 2002 Silverado Z71, you need to:
* Check the sticker inside the driver's side doorjamb: This sticker lists the vehicle's specifications, including the maximum towing capacity.
* Consult the owner's manual: This manual will have detailed information about towing capacity based on different engine options, axle ratios, and available towing packages.
Without knowing the specific engine and options on the truck, any number I provide would be an unreliable guess.