2020 vision: GMC Sierra Heavy Duty here late summer
May 24, 2019 | 1:37 PM
The 2020 Sierra Heavy Duty will be available at GMC dealers starting in late summer. Features include an enhanced ProGrade Trailering system with available 15 camera views. A 15-inch-diagonal head-up display offers trailering information. There's also an available segment-first rear camera mirror. Leather-appointed seating, wood trim and dark-finish aluminum decor are Denali-exclusive.