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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers Clear SetFeatures Plug and play compatible with GMC Sierra HD 2020+ fender lights Dynamic startup sequence with animated effect Fully illuminated housing, with dual lens design for an even glow Optional Sequential turn signal feature, with plug and play wiring harness OEM grade construction and perfect fitment Engineered and assembled in USA Overview Upgraded Styling. These LED sidemarkers are a plug and play replacement for the factory fender lights,
Features Plug-and-play compatible with GMC Sierra HD 2020+ fender lights Dynamic startup sequence with animated effect Fully-illuminated housing, with dual-lens design for an even glow Optional Sequential turn signal feature, with plug-and-play wiring harness OEM-grade construction and perfect fitment Engineered and assembled in USA Overview Upgraded 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. Options Amber: 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 |
|---|---|---|---|
| 2020-2023 | GMC | Sierra 2500 HD | AT4 |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2023 | GMC | Sierra 2500 HD | Denali |
| 2022-2023 | GMC | Sierra 2500 HD | Pro |
| 2020-2023 | GMC | Sierra 2500 HD | SLE |
| 2020-2023 | GMC | Sierra 2500 HD | SLT |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Prize and Delivery!
Color: Rustic Brown, Size: 24"W x 6.5"D, 2Packs
Beautiful and super easy to install!
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Stylish storage that actually works
Size: 31.5 Inch, Color: Rustic Brown, Size: 31.5 Inch, Color: Rustic Brown
I love this shelving unit so much—it’s both functional and really attractive.
We’re currently using it for Lego storage in our playroom, but it still feels elevated and blends nicely with the rest of the room’s decor. It’s a great balance of practical and stylish.
The shelves offer plenty of space and the overall size is perfect. It’s also super sturdy, well-made, and was easy to put together.
A great option if you need storage but don’t want to sacrifice the look of your space.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Great for creating open shelving rather than adding cabinetry
I purchased two of the 24 inch shelves to create a coffee nook in my kitchen. They are very high-quality, attractive, were easy to install, and are sturdy. These shelves are a great alternative to having to add cabinetry to store items.
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Sturdy and easy to assemble.
Size: 31.5 Inch, Color: Rustic Brown
Remarkably easy to assemble, sturdy, looks great on my wall. My only complaint is that you can't really hang anything off of the top bracket -- the promotional photos show an item hanging from there, but they've used an item with a very strangely shaped handle to make it work. Booo.
Still, great little shelf. Happy with it.
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Reviewed in the United States on October 30, 2025
★★★★★ 5
Great Spacesaver and looks good too.
Size: 31.5 Inch, Color: Rustic Brown
Bought this to free up counter space and cupboard space. And it does the job perfectly. Easy to assemble and install, but make sure you have another set of hands nearby cause it could be a little tough to install by yourself.
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Reviewed in the United States on February 19, 2026