GM Genuine Parts Transmission Mounts secure your vehicle's transmission, and are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These mounts help to absorb drivetrain vibrations and are tuned to your vehicle; helping create a comfortable ride inside your vehicle's cabin. Additionally, these mounts are designed to function with surrounding components, helping eliminate possible interference with other nearby mechanisms. 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).