Medium Duty Trucks use a one-key locking system. A single, two-sided key operates the ignition and both doors. The key is reversible, and inserts with either side facing up.
Identify keys by the 5-character key code stamped onto the key. Use the code numbers and a code list in order to determine the lock combination of the vehicle. The owners of key cutting equipment receive the code list from equipment suppliers. If the code number is not available from records or from the five-character key code number, a key code number label is on the inside of the bottom glass on the passenger's side door.