Description: GM Genuine Parts Radio Antennas are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These antennas pick up the magnetic energy of radio waves and send it to your vehicle's radio receiver. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. 

Description: Without digital audio. Sierra, silverado. Shielded from outside electrical interference
This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors