Enhance your vehicle's radio navigation system with this genuine OEM Shark Fin Antenna Assembly from GM. Designed for direct replacement, the painted black antenna with AM/FM technology is waterproof and comes with a lock ring and attachment bolts for easy installation on the roof of your 2015 Sierra 2500 HD, 3500 HD or Silverado 2500 HD, 3500 HD. With OE specifications, certifications, and a 1-month manufacturer warranty, this antenna is a reliable and stylish addition to your vehicle. The antenna is also compatible with other models and has universal fitment. Upgrade your vehicle's radio reception with this high-quality Shark Fin Antenna Assembly.