Vehicle Access and Features To close the front access panel, lift the panel slightly to release the support rod. Secure the support rod, and press the panel down until it locks. Back-of-Cab Grab Handle, Step, and Deck Plate When climbing onto the frame rails or deck plate, use the grab handle and step. Always maintain three-point contact with the back-of-cab access system. A grab handle is mounted on the cab. When an optional deck plate is included, it is mounted across the top of the frame rails. 2.16