Abstract: An apparatus for locking and unlocking one or more storage compartments in a truck service body includes a channel assembly that is slidably secured to the service body by at least one channel support. A rod assembly having an L-shaped locking bracket is slidably secured to the service body by a plurality of rod supports. The rod assembly passes through the channel assembly. A handle for manually moving the rod assembly between a locked position and an unlocked position is included. The handle is rigidly secured to the channel assembly and extends outside of the service body. The handle is adapted for coupling to the service body by a manual locking mechanism. An electro-mechanical actuator is coupled to the rod assembly for moving the rod assembly between its locked and unlocked positions.