GM Genuine Parts Power Steering Assist Motor/Modules are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Power steering assist is an automotive system which helps you maneuver your vehicle with more ease on the road. These modules use input from various sensors to determine the amount of effort required to steer the vehicle and then commands the correct amount of current to the power steering motor. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).