1. Driver's side dashboard: Look through the lower corner of the windshield on the driver's side. The VIN should be visible stamped into the dashboard itself.
2. Driver's side doorjamb: The VIN is usually also stamped on a sticker located on the driver's side doorjamb. This sticker often contains other vehicle information as well.
While it's *not* typically called a "chassis number," the VIN serves the same purpose of uniquely identifying the vehicle. So, if someone asks for the chassis number, providing the VIN is the correct response.