99-06 Chevy/GMC AMP Research Power Steps
AMP Research invented the PowerStep™, the automatic, electric-powered running board that instantly extends when you open your door, and retracts out of sight when the doors close for improved ground clearance, aerodynamics and appearance. Its sleek design, all-weather performance and legendary reliablility set the industry standard. PowerStep™ has die-cast aluminum alloy components and precision stainless steel pivot pins for rock-solid stability. The original PowerStep™ is American designed and engineered.