GMC Gasoline (WA457B/GPA) Touch Up Paint

The Look

This color is a moody, industrial charcoal that served as the professional backbone for the Canyon, Savana, and Sierra between 2017 and 2019. It carries a heavy, stone-like presence that makes a truck look like it was carved from a single block of granite. If you are touching up a Savana, you have one of the few utility vans on the road that actually looks expensive. It is a practical choice because it masks light road dust and grime, but it still has enough depth to catch the light when the sun hits those broad body panels.

Technical Details

This is a metallic finish, which means the paint is packed with tiny flakes designed to shimmer. These flakes are heavier than the pigment and will sink to the bottom of your container if you do not stay on top of them. If you apply the paint too heavily in one spot, the flakes will bunch together and create dark, cloudy blotches known as mottling. To avoid this, you need to use light, even layers so the metallics can lay flat and reflect light uniformly across the repair.

Best Practices

You can find your code on the silver Service Parts Identification sticker; on a Sierra or Canyon, check the inside of your glove box, while on a Savana, you might need to look under the driver's seat or on the rear face of the door pillar. Before you spray or dab GMC Gasoline (check for code WA457B/GPA), you need to shake it for at least 60 seconds to ensure the metallic particles are fully suspended. Test the color on the included card to confirm the shade matches your current finish before you touch the vehicle. Work in your garage or in the shade, and keep the container moving to ensure the finish remains uniform and level. Give the paint plenty of drying time between layers to prevent it from sagging or trapping moisture.