2020-2026+ GMC Sierra HD 2500/3500 Smoked White Amber SCANNING LED Side Markers

In stock
Regular price $149.99
Regular price -40% $249.00 Sale price $149.99
Select Lens/LED Color
Scanning Startup Animation?
Add (20) replacement retaining clips? (RECOMMENDED)

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Clear or smoked lens, white or amber LED side marker lights with scanning startup animation designed for your 2020-2026+ GMC Sierra HD 2500 & 3500 truck that feature a sleek, thin strip of LEDs for a clean and subtle appearance.

Choose from:

  • Clear lens, white LED side markers for 2020-2026 GMC Sierra HD
  • Clear lens, amber LED side markers for 2020-2026 GMC Sierra HD
  • Smoked lens, white LED side markers for 2020-2026 GMC Sierra HD
  • Smoked lens, amber LED side markers for 2020-2026 GMC Sierra HD

Features

  • Plug-and-play replacement for 2020-2026 GMC Sierra HD fender lights
  • Fully-illuminated housing, with dual-lens design for an even glow
  • OEM-grade construction and perfect fitment
  • SCANNING 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.

ADD RETAINING CLIPS: We highly recommend adding on the (20) replacement retaining clips. During removal of the fenders, it is highly likely that some of these clips will break.

OEM Grade. Unlike other sidemarkers on the market, these sidemarkers were designed for OEM standards of quality, using automotive-grade plastic materials, UV-stable lenses, and quality connectors. The dual-lens design uses an inner diffusing lens combined with an outer lens, for an even, uniform glow. The units themselves are designed directly from original CAD data for a perfect fit, and use OEM-grade connectors that plug right into the factory socket.

Reliability. These LEDs are designed with newer constant-current circuitry and transient voltage protection. These features, found in factory-installed lighting components, protect the circuit over time, ensuring years of flicker-free performance. They also include a breather vent, to prevent pressure buildup and maintain a strong weathertight seal for years to come.

CLICK HERE FOR THE 2020-2024 GMC Sierra HD 2500 3500 Sequential LED Side Marker INSTALLATION VIDEO

Smoked: A dark appearance, great on black and grey vehicles.

Clear: Blends nicely on white and silver. These are clear in color, but still have the retroreflector optics.

  • Four (4) replacement side markers 
  • Optional (20) fender clips

2020-2026+ GMC Sierra HD 2500 3500 trucks

Did you know?
We've just launched Sick Diesel Garage the official installer of Sick Diesel Gear lights, if you are in Florida Sarasota area drop by. Learn More →

Frequently Asked Questions

Unfortunately, not: truck grilles aren't included with your purchase. However, all Sick Diesel lights can be retrofitted to stock truck models to ensure a more stylish and functional drive.

We offer a 6-month warranty on all Sick Diesel light bars, grill lights, accessories, gear, and products. If you’re not satisfied with your purchase, reach out to us, and we’ll get back to you in one business day or less.

Yes! We sell and distribute our products worldwide. For international purchases, Sick Diesel customers are responsible for any additional costs that may occur.

You most definitely can. Our 12-volt LED dimmer controller allows you to adjust the brightness and intensity of your lights to suit your needs. Before completing your purchase, we advise checking the "What is in the package" section of each product page to see if our LED Dimmer Controller is included with your purchase.

As a small, veteran-run operation, we’re all about supporting local businesses. All of our products are designed and custom-made right here in Sarasota, Florida, USA.

No. Smoked lenses don’t affect the color of our lights. Smoked lenses help reduce the glare emitted from traditional vehicle bulb lights, and no discoloration of lights will occur.

The plug-and-play harness connects between the headlight and the headlight harness on either side of the vehicle.

Fitment depends on the year, make, and model of your vehicle. When selecting a product, ensure you choose the exact year, make, and trim level of your truck.

Most of our lights range from 6500K to 12000K, depending on the specific year, make, and model.

Yes, all of our lights have an IP68 waterproof rating.

Ninety percent of our lights are mounted on a rigid frame and bolted into the grille with no modifications—except for the GMC 1500, where the light is attached using industrial adhesive.

For custom builds, contact nick@sickdieselgear.com.