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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29
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Description
Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers Smoked 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
4.2 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Great little umbrella light, I love it!
Color: Warm White, Color: Warm White
This umbrella light is small , compact and very lightweight, you can effortlessly move it around if your changing umbrellas. I Also love how bright this little thing is, with the click of a button the place is brightly lit. Love, that you don't have to have all the lights on if you don't want to that's a stand out feature. Great little light that adds a touch of elegance. Very user-friendly, in seconds to minutes its up and running.
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Reviewed in the United States on July 3, 2025
★★★★★ 4
Great Light but NOT USB CHARGEABLE
I bought this lamp for my bell tent, which has a center pole. It did exactly what I wanted it to do: provide light to my whole tent instead of depending on a lantern or flashlight. It snapped on easily and fit the pole perfectly. I wish it had a remote but I could have spent more and bought one with that functionality. The reason I took a star off is because it is advertised as being USB and even requires RECHARGABLE batteries. Since I'm not savvy on these things I paid extra for the batteries thinking the USB charges them in the device. NOPE. The USB is just for powering the light from an ac source (which is pointless for what I use it for).
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Reviewed in the United States on March 4, 2025
★★★★★ 5
Kinda of a cool gadget
Color: Cool White
I really didn't know I needed this until I got it! Easy and quick to recharge batteries (they do not come with rechargeable batteries). Put out enough light for an evening outside around the table
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Reviewed in the United States on June 23, 2025
★★★★★ 5
Love the Warm Glow!
Color: Warm White
This light is very easy to install and has 3 different lighting options. I love the warm white light it emits as opposed to a bright white light that could attract bugs at night. Perfect light for patio, deck, camping, golf cart, etc!
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Reviewed in the United States on July 14, 2025
★★★★★ 3
It feels cheap and works just okay
This product just feels like it was made on the bottom dollar. It is very cheaply made and the doors to the battery compartment are so fragile it feels like they may snap next time I have to change the batteries. There's absolutely no weather proofing so I wouldn't leave it outside in the rain or heat. That being said, it's fine. It stays put on our umbrella and puts out light, albeit not much light.
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Reviewed in the United States on April 16, 2021
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