The Paccar Right Hand Shift Stalk (RHS) is a driver interface component used to control gear selection and engine brake intensity in Kenworth and Peterbilt trucks with TX-12 or Endurant automated manual transmissions. Mounted conveniently on the steering column, it allows for intuitive shifting and transmission mode selection without taking hands off the wheel. The shift stalk integrates seamlessly with the vehicle’s CAN bus system, contributing to a safer and more efficient driving experience in heavy-duty commercial applications. Weller Truck Parts offers professionally remanufactured and upgraded RHS that exceed OEM standards for quality and reliability. Each unit is carefully disassembled, cleaned, and rebuilt by IPC certified technicians. During the reman process, an upgraded interconnection harness and PCB connectors are installed to eliminate the common issue of CAN bus signal loss within the RHS. This upgrade will permanently solve Transmission faults resulting from DTC 525 FMI 12. Common symptoms include failure to shift from neutral, check transmission indications, and un-commanded shift to neutral while moving. Restore confidence with a Weller RHS! Weller’s remanufactured shift stalks are backed by an industry-leading warranty, and customers benefit from Weller’s expert tech support and responsive customer service. Weller makes it quick and easy to get the right parts and the help needed to keep you on the road. Whether you're replacing a failed actuator or proactively maintaining your fleet, Weller delivers dependable solutions you can trust. NOTICE: This remanufactured part corrects the underlying root-cause defect but is not an OEM-authorized recall remedy and is not eligible for OEM recall reimbursement.