GMC Gray (WA633D) Touch Up Paint

The Look

Since your Sierra is likely still fresh from the factory, you are dealing with a modern, tactical shade that defines the current generation of GMC trucks. This color is a deep, sophisticated charcoal that replaces the boring grays of the past with something that looks rugged in the mountains and sharp under city lights. It is an excellent choice for a work truck because it hides road dust and light grime better than almost any other color in the lineup. Because your vehicle is so new, you do not have to worry about significant sun fading, which makes your repair much more straightforward.

Technical Details

This is a metallic finish, which means the paint is loaded with tiny aluminum flakes designed to catch the sun. Metallic paints carry a specific risk: if you apply the paint too heavily in one spot, those flakes will sink and bunch together, creating a dark, muddy blotch. To get the light to bounce off the repair the same way it does on the rest of your door or fender, you need to build the color using thin, light layers. This finish relies on a clear coat for its final depth, so do not expect the base color to look shiny until that final protective layer is added.

Best Practices

You can find your official identification sticker located inside the glove box or on the driver's side door jamb. Before you apply GMC Gray (check for code WA633D), you must shake the container for at least sixty seconds to ensure the metallic flakes are fully suspended in the liquid. Test the color on the included card to verify the shade before you move to the vehicle. When you begin, keep the container moving at a steady pace to maintain an even flow across the surface. This prevents the paint from pooling and ensures the flakes lay down flat. Give the surface plenty of drying time between layers to avoid runs or sagging in the finish.