To find the GVWR for a *specific* 2001 Ford F-350 Crew Cab 4x4, you need to look at:
* The sticker on the driver's side doorjamb: This sticker lists the GVWR along with other important weight information.
* The owner's manual: This manual will also specify the GVWR.
Without knowing the exact specifications of the truck, I cannot provide the GVWR.