2020 GMC Sierra Heavy Duty Truck
![](https://i.ytimg.com/vi/oflq-0hxm_c/maxresdefault.jpg)
Bigger, stronger and smarter, the all-new 2020 GMC Sierra Heavy Duty combines greater trailering capability with technologies designed to provide customers …
2020 GMC Sierra Heavy Duty Truck
Bigger, stronger and smarter, the all-new 2020 GMC Sierra Heavy Duty combines greater trailering capability with technologies designed to provide customers …