Orscheln Products LLC released Shift-X-Wire 4.2, which is comprised of a push button shift selector, PBSS and an electronic actuator that rotates the selector shaft on Allison Transmission 1000 and 2000 series transmissions. The Shift-X-Wire 4.2 system replaces the mechanical shift lever and control cable that is standard in the Allison Transmission 1000 and 2000 series. Gear and park pawl selections are made from the PBSS and are communicated over CAN via SAE J1939 to the Allison Transmission controller. The actuator listens to this communication and moves the selector shaft to the requested position. The shift selector displays the requested and current gear as reported by the transmission controller.