2020 Chevrolet Silverado 2500HD Paint Color Codes & Touch-Up Guide

Whether you are repairing a minor scratch from the job site or fixing a rock chip on the highway, finding the exact paint code for your 2020 Chevrolet Silverado 2500HD is the crucial first step to a seamless repair. Using the correct factory paint code ensures your touch-up paint blends perfectly with the surrounding panels. Below is your comprehensive guide to 2020 Silverado 2500HD paint codes, where to locate them, and how to apply touch-up paint correctly.

Quick reference

Here are the factory paint colors offered for the 2020 Chevrolet Silverado 2500HD. GM paint codes are typically represented by a 3-digit RPO code (like GAZ) and a 4-digit "WA" code (like WA8624).

Note: Always confirm your specific code via your vehicle's VIN at a dealership or paint supplier if you are unsure.

Where to find your paint code

For decades, General Motors placed the Service Parts Identification (SPID) sticker inside the glove box. However, for modern trucks like the 2020 Silverado 2500HD, GM has moved this information.

You will find the paint code on the Certification/Tire label located on the driver's side B-pillar or the driver's door edge. On the 2020 Silverado, look for a silver or white sticker with a QR code. At the bottom of this sticker, you will see a code preceded by "BC/CC" (Basecoat/Clearcoat) and "U" (Upper) or "WA". For example, if your truck is Summit White, you will see "U 8624" or "WA8624". You can also scan the QR code with your smartphone to pull up your truck's specific build data, which includes the paint code.

Best touch-up paint sources

Getting the right paint is just as important as knowing the code. Here are the top sources for buying color-matched paint for your Silverado:

• OEM Dealer: Your local Chevrolet dealership's parts department sells exact-match touch-up pens and small brush bottles. This is highly recommended for newer vehicles.
• AutomotiveTouchup: A favorite among DIYers and pros, they offer exact custom-mixed paints in bottles, spray cans, and ready-to-spray pints/quarts based on your WA code.
• Dupli-Color: Available at most auto parts stores (AutoZone, Advance Auto, O'Reilly). Dupli-Color offers "Perfect Match" aerosol cans and scratch-fix pens. They are convenient and affordable for quick fixes.
• Tcoat Custom-Mix: Great for custom-mixed batches, especially if you need a specific primer-to-clearcoat all-in-one kit for deeper rock chips.

How to use touch-up paint

For a durable, invisible repair, follow these essential steps:

1. Clean: Thoroughly wash the chipped or scratched area with wax and grease remover or rubbing alcohol. The surface must be completely free of dirt, wax, and oils.
2. Primer: If the scratch goes down to the bare metal or plastic, apply a light coat of automotive primer. Let it dry completely (usually 20-30 minutes) before applying color.
3. Base Coat (Color): Shake your touch-up paint vigorously. Apply the color in very light, thin layers using a fine-tipped brush or toothpick. Allow 15-20 minutes of flash time between coats. Build the paint up until it is just below the level of the surrounding clear coat.
4. Clear Coat: Once the base coat is fully dry (wait at least an hour), apply the clear coat. The clear coat protects the color and provides the glossy finish that matches the rest of your truck.

Color matching tips for pearls and tri-coats

If your Silverado is painted in a complex color like Iridescent Pearl Tricoat (G1W/140X) or Cajun Red Tintcoat (GPJ/434B), extra care is required.

Tri-coats consist of three layers: a solid base color, a translucent pearl mid-coat, and a protective clear coat. When touching up a tri-coat, you must apply the base color first, followed by carefully layered applications of the pearl mid-coat. The more mid-coat you apply, the darker and more "pearlescent" the finish becomes. Test your layering on a piece of scrap metal or cardboard first to determine how many mid-coats are needed to match your truck's specific factory hue.

For severe damage or large panels, blending tri-coats is exceptionally difficult with touch-up pens or rattle cans. If the damage is larger than a quarter, professional blending is highly recommended.

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