General Description Step into your 2020-2023 GM Silverado 2500/3500 with the AMP Research 77254-01A Powerstep XL. The Powerstep XL is an extended length retractable electric-powered running board that extends when you open the door and hangs an extra 3 inches lower over the standard Powerstep running board. Once you the close the door the running boards. The Powerstep XL is mainly built for lifted applications. The running boards are engineered with OEM like motors and are designed to last for ears in all weather conditions. These lightweight, yet rock-solid running boards feature rugged die-cast linkage components that are built in the USA. The Powerstep XL is built to hold up to a 600lb load capacity and doesn't require any maintenance. AMP Research backs the Powerstep XL with a 5 year / 60,000 mile warrant. Features XL boards extend 4-inches lower than original PowerStep Premium, single-motor design automatically deploys and retracts boards Corrosion-resistant cast aluminum construction Anodized, then finished with a military-grade PTFE coating 6-inch wide, cab-length step area Textured, slip-resistant step surface Integrated LED lighting illuminated steps for safe entry Optional Override Switch is available for manual control Includes vehicle-specific installation guide, mount kit, and hardware Mounts to vehicle's rocker panel Connects to OBDII port using patented Plug-N-Play module Professional installation is recommended 5-year/60,000 mile warranty