2021 GMC Sierra 2500HD Paint Codes

Quick reference

Where to find your paint code

For your 2021 GMC Sierra 2500HD, the paint code can typically be found on a sticker located on the inside of the glove box door or on the driver's side door jamb (B-pillar). This sticker usually contains various vehicle information, and the paint code will be listed under a "BC/CC" (Basecoat/Clearcoat) heading or similar, often accompanied by the color name. It's a good idea to check both locations. The code itself is usually a two to four-character alphanumeric code, sometimes followed by a four-digit numerical code in parentheses, as seen in the quick reference table above.

Best touch-up paint sources

When it comes to touching up minor scratches or chips on your 2021 GMC Sierra 2500HD, several reputable sources offer quality products:

• Dupli-Color: Widely available at automotive stores, Dupli-Color offers aerosol cans and paint pens that are color-matched to your factory paint code. They are a good option for small chips and scratches.
• AutomotiveTouchup: This company specializes in custom-mixed touch-up paint, offering a precise match to your vehicle's factory color. They provide paint in various forms, including pens, brush bottles, and aerosol cans, and are known for their accuracy, especially for metallic and pearl finishes.
• Tcoat Custom-Mix: Similar to AutomotiveTouchup, Tcoat offers custom-mixed paint solutions to ensure an exact match. They are a great choice for those seeking professional-grade results on more complex finishes.
• Dealership: Your GMC dealership can supply genuine OEM touch-up paint specific to your truck's VIN, ensuring the most accurate color match directly from the manufacturer.

How to use touch-up paint

Achieving a seamless touch-up requires a few careful steps:

1. Clean the area: Thoroughly clean the chipped or scratched area with soap and water, then an automotive degreaser or rubbing alcohol, to remove any dirt, wax, or contaminants. Allow it to dry completely.
2. Apply primer (if needed): For deeper scratches that expose bare metal or plastic, apply a thin layer of primer. Allow it to dry according to the product instructions.
3. Apply base coat: Shake the touch-up paint thoroughly. Apply several thin coats of the base color, allowing each coat to dry for 10-15 minutes before applying the next. Build up the paint slowly until it's level with the surrounding paint. Don't try to cover the area in one thick coat.
4. Apply clear coat: Once the base coat is dry, apply two to three thin coats of clear coat to protect the paint and provide a glossy finish. Allow sufficient drying time between coats and a final cure time as recommended by the product.

Color matching tips for pearls and tri-coats

Many modern vehicle finishes, including some for the 2021 GMC Sierra 2500HD, incorporate metallic or pearl effects. These types of paints can be more challenging to match perfectly due to their multi-layered composition:

• Metallic paints: These contain tiny metallic flakes that reflect light, creating a shimmer. When applying touch-up paint, it's crucial to apply thin, even coats to ensure the flakes lay down uniformly. Improper application can result in a darker or lighter appearance.
• Pearl paints (Tri-coats): Pearl finishes contain mica or ceramic particles that create a deep, iridescent effect. Tri-coat paints involve three distinct layers: a colored ground coat, a translucent mid-coat (the pearl effect layer), and a clear coat. Matching these requires precise application of each layer in the correct thickness. For these complex finishes, it's highly recommended to use custom-mixed touch-up paint from AutomotiveTouchup or to consult with a professional body shop for the best results.

If you're unsure about a specific color code or have a complex finish, it's always best to verbally confirm your paint code with a dealership parts department using your VIN, or with a specialized paint supplier. This will help ensure the most accurate match possible.

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