* Check the sticker: Look for a sticker on the driver's side doorjamb or the glove box. This sticker lists the GVWR.
* Consult the owner's manual: The owner's manual will also specify the GVWR.
* Use the VIN: You can use the vehicle identification number (VIN) to look up the specifications on sites like Ford's website (if they have that far back archival data) or a third-party VIN decoder.
Without knowing the specific trim level and options of the truck, I cannot provide a precise GVWR. Expect it to be in the range of 6,500 to 7,000 lbs, but this is just an estimate, and the actual GVWR could be higher or lower.