To find the GVWR for a *specific* 2006 Chevy Silverado 1500 crew cab, you need to:
* 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 for that particular truck.
Without knowing the exact trim level and options of the truck, I cannot provide the GVWR.