Product details:

ACDelco GM Original Equipment Power Antennas automatically extend when you turn on your vehicle or radio, and retract when your vehicle or radio is turned off. A power antenna receive the Over The Air (OTA) radio station signals for your vehicles radio receiver. Damaged or corroded antennas can impair radio station reception. These original equipment power antennas have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.