Features and specs for the 2018 Chevrolet Silverado 1500 Z71 LT including fuel economy, transmission, warranty, engine type, cylinders, drive train and more. i got my 2018 Silverado Super Crew a month or so ago, and I absolutely love it. The only thing I don't like is the sound system. That's really not the truck's fault. I've had premium aftermarket systems in just about everything I've ever owned. I spend a lot of time on the road, and I'm really into all types of music.

Jul 21, 2010 · My gmc pu sound system is muted how do i unmute? - Answered by a verified GM Mechanic. ... I cany unmute radio...no sound at all. When I hit the power.