Arnott's rear shock AS-3429 for 2015-2020 GM® trucks and SUVs (K2XX Chassis originally 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.