Features: Helps provide a smooth, level ride Some GM parts may have previously been called ACDelco GM Original Equipment (OE) GM parts are designed, engineered, and tested to exacting standards and are backed by General Motors GM engineers design and test OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac GM regularly updates production and service part designs to incorporate new materials and technologies Description: GM Torsion Springs are designed, engineered, and tested to exacting standards and are backed by General Motors. Torsion springs (also called coil springs) are a type of torsion spring that can store energy and release it later when needed. They also help absorb shock and maintain force between two contacting surfaces. These springs help support the weight of your vehicle, maintaining the proper trim or ride height of the vehicle, and help stabilize it even under difficult driving conditions. They are able to expand when you hit bumps in the road and contract when you hit bumps or take sharp turns. GM parts are OE parts installed during production or approved by General Motors for GM vehicles. Some GM parts may have previously appeared as ACDelco GM original equipment (OE).