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One-of-a-kind Diode Dynamics 20-21 Sierra 2500/3500 Led Sidemarkers Hd Smoked Set Satisfaction Guaranteed [bMNnjlRI]

$59.99 $191.99 -69%

FeaturesPlug-and-play compatible with GMC Sierra HD 2020+ fender lightsDynamic startup sequence with animated effectFully-illuminated housing with dual-lens design for an even glowOptional Sequential turn signal feature with plug-and-play wiring harn

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One-of-a-kind Diode Dynamics 20-21 Sierra 2500/3500 Led Sidemarkers Hd Smoked Set Satisfaction Guaranteed [bMNnjlRI]

FeaturesPlug-and-play compatible with GMC Sierra HD 2020+ fender lightsDynamic startup sequence with animated effectFully-illuminated housing with dual-lens design for an even glowOptional Sequential turn signal feature with plug-and-play wiring harnessOEM-grade construction and perfect fitmentEngineered and assembled in USAOverviewUpgraded Styling. These LED sidemarkers are a plug-and-play replacement for the factory fender lights illuminating the entire width of the housing for a distinctive look and brighter appearance. Choose from three lens color options to get the look you're after.Unique Startup. Both the standard and sequential models feature a unique startup sequence. Every time the sidemarkers turn on they illuminate in an intense amber color starting from the center then spreading to either side. Once they are completely illuminated they gradually return to a running light mode.Sequencing Turn Signal. Our sequential option provides an upgrade in functionality. Anytime you hit your turn signal the sidemarkers illuminate in a sequencing amber pattern to indicate signaling! The sequential option uses the included plug-and-play harness to power the fender lights using the headlight connector.OptionsAmber: These match your original sidemarkers and are DOT/SAE compliant.Smoked: A dark appearance great on black and grey vehicles.Clear: These are clear in color but still have the retroreflector optics.

This Part Fits:

Year Make Model Submodel
2023-2025 GMC Canyon AT4
2023-2024 GMC Canyon AT4X
2023-2025 GMC Canyon Denali
2023-2025 GMC Canyon Elevation
2020-2025 GMC Sierra 2500 HD AT4
2024-2025 GMC Sierra 2500 HD AT4X
2020-2021 GMC Sierra 2500 HD Base
2020-2025 GMC Sierra 2500 HD Denali
2024-2025 GMC Sierra 2500 HD Denali Ultimate
2022-2025 GMC Sierra 2500 HD Pro
2020-2025 GMC Sierra 2500 HD SLE
2020-2025 GMC Sierra 2500 HD SLT
2024-2025 GMC Sierra 3500 HD AT4
2024-2025 GMC Sierra 3500 HD Denali
2024-2025 GMC Sierra 3500 HD Denali Ultimate
2024-2025 GMC Sierra 3500 HD Pro
2024-2025 GMC Sierra 3500 HD SLE
2024-2025 GMC Sierra 3500 HD SLT

What Our Customers Say

January 17, 2026

Absolutely no complaints!

Worth every penny. A great investment.

- Steven Hall.

January 17, 2026

Absolutely no complaints!

Works flawlessly right out of the box.

- Sarah L..

January 17, 2026

Absolutely no complaints!

A top-quality item that feels built to last.

- Ava Simmons.

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