2020 vision: GMC Sierra Heavy Duty here late summer

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.
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