2015 GMC Sierra Denali Pickup Truck The lighting upgrades transform this truck when the sun goes down. The front doors feature speakers that are used in both a single-way and three-way configuration. The rear doors were upgraded with Audiofrog coaxials. The dash houses both of the Audiofrog speakers. PAC Audio was tasked with interfacing the factory radio with the new electronics. The new ARC Audio amplifiers power the speakers and subwoofers. The custom subwoofer enclosure features lighting on the logo. The custom enclosure features matching stitching. The Party Mode switch lets the door speakers play full range. The ARC Audio subwoofer level control was mounted within easy reach of the driver. LED rings were added to accent the wheels.
