GMC Dark Huron Blue Metallic (30/WA8861) Touch Up Paint

The Look

This shade defines the transition of the GMC truck lineup from the boxy utility of the late C10 series to the more refined Sierra profile of the late eighties. It is a deep, professional blue that carries a lot of weight on those large, flat body panels. Because your truck has likely been on the road for over thirty years, the original finish has probably shifted toward a flatter tone than what came off the assembly line. This color is not meant to scream for attention; it provides a stoic, clean finish that hides road grime better than a standard navy but still rewards a good wash with a visible shimmer.

Technical Details

You are working with a true metallic finish, which presents a specific challenge for your repair. The tiny flakes inside the liquid love to clump together or sink to the bottom of the container. If you apply the paint too heavily in one spot, those flakes will bunch up and create dark, blotchy patches that look like bruises on the metal. To avoid this, you must keep the container moving across the surface to ensure the flakes lay down evenly. If the flakes are not distributed correctly, the repair will look like a different color entirely when the sun hits it from an angle.

Best Practices

Pop open your glove box and look for the silver Service Parts Identification sticker to confirm your match. Before you spray or dab GMC Dark Huron Blue Metallic (check for code 30/WA8861), you need to shake it for 60 seconds. This is non-negotiable for metallics. Once you have mixed the pigment and flakes, test the color on the included card to see how it reacts to your technique. Whether you are using a nozzle or a brush, work in thin layers and give the paint plenty of drying time between applications. Working in the garage or the shade will prevent the paint from drying too fast, which helps the metallic particles find their proper place.