Please note: This product may be available for back-order when not in-stock, Please enquire for lead times. Allison Transmission Internal Control Wiring Harness Assembly 29558426. This part is in limited supply at the Allison factory and must be ordered unit-down with a transmission serial number. Connects the control valve to the main wire harness. Allows the TCM to communicate effectively with the control valve. Controls the control valve solenoids. The Control Valve Internal Control Wiring Harness Assembly provides the connecting link between the solenoids and the transmission control module (TCM). The wiring harness is key to relaying information and transmitting power to the TCM. It is essential to the proper operation and functioning of the transmission. Genuine Allison Transmission product. Mitchell Powersystems are an authorised Allison Transmission distributor for the UK. Please message us with your transmission serial number to check compatibility. Don’t forget to subscribe to our news letter for additional discounts. You can also place back orders for out of stock items, Please message us for lead times.
