What sound system and display does the 2017 GMC Sierra 1500 Base Regular Cab Standard Box have? The 2017 GMC Sierra 1500 Base Regular Cab Standard Box Vehicle is equipped with a 4-speaker audio ...

What sound system and display does the 2017 GMC Sierra 2500HD WT Regular Cab Long Box have? The 2017 GMC Sierra 2500HD WT Regular Cab Long Box Vehicle is equipped with a 4-speaker audio system and ...