The 2020 GMC Sierra HD represents a complete overhaul and redesign with the fourth-generation model. In addition to the many changes and updates, including the switch to GM’s T1 platform and the introduction of the all-new Sierra AT4 HD model, the nameplate also adds four new exterior color options to its palette: Pacific Blue Metallic, Dark Sky Metallic, Carbon Black Metallic and Brownstone Metallic. Here’s our first look at the new Brownstone hue.
Assigned color code GNK and touch-up paint code WA-334E, Brownstone Metallic is the only brown hue available for the 2020 GMC Sierra HD. It is also one of five dark hues, and one of five metallic color options.
The Brownstone Metallic color option is not included in the base price of the all-new Sierra HD, and costs an additional $495. The vehicle is available in conjunction with all trim levels and interior color combinations except for the Dark Walnut with Dark Ash Grey combination.
2020 GMC Sierra HD Trim Levels:
- Sierra (1SA)
- SLE (3SA)
- SLT (4SA)
- AT4 (4SB)
- Denali (5SA)
2020 GMC Sierra HD Interior Color Combinations:
- Jet Black
- Dark Walnut with Slate
- Jet Black Kalahari
- Dark Walnut with Dark Ash Grey
The GM Flint Assembly plant and GM Fort Wayne Assembly plant are tasked with assembling the 2020 GMC Sierra HD, and models in the Brownstone Metallic exterior color are already sitting on dealer lots. Availability varies by dealer, so check with yours for complete details.