Arnott's rear shock AS-3429 for 2015-2020 GM® trucks and SUVs (K2XX Chassis) equipped with MagneRide® is the ideal replacement for your failing rear air assisted shock. This Arnottt twintube shock, which was engineered in the USA, includes a passive damper which has been custom tuned to deliver control, stability, and comfort. Arnott's new aftermarket rear shock bypasses the vehicle's auto-damping system and incorporates a sensor which eliminates dash panel error messages.