GMC Son Of A Gun Gray Metallic (WA139X/WA481B/WA482B) Touch Up Paint

The Look

This color gave the GMC Terrain a tactical, modern edge during its brief two-year run. It is a deep, smoky gray that avoids looking like a dull primer thanks to its heavy metallic content. Since your vehicle has likely been on the road for a few years now, you are probably noticing how stone chips on the hood break up that uniform, industrial aesthetic. This shade is excellent at hiding road grime, but the dark base means those white or silver nicks from highway debris really pop.

Technical Details

This is a true metallic finish, which presents a specific challenge for your repair. The paint is loaded with tiny aluminum flakes that provide that signature shimmer. If you apply the paint too heavily in one spot, those flakes will sink or bunch together, creating a dark, cloudy effect known as mottling. It makes the repair look like a smudge rather than a crisp fix. To avoid this, you want the paint to lay down thin so the flakes can find their orientation and catch the light correctly.

Best Practices

Before you spray or dab GMC Son Of A Gun Gray Metallic (check for code WA139X/WA481B/WA482B), you need to shake the container for a full sixty seconds to ensure the metallic flakes are suspended in the mix. You can find your paint code on the silver Service Parts Identification sticker, usually located inside the glove box or on the driver side door jamb. Test the color on the included card to see how the metallic behaves before you touch the vehicle. When you start the repair, work in the shade and keep the container moving to ensure an even flow. Give each layer plenty of drying time so you don't disturb the flakes with the next pass.