
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
For Your Every Summer RSVP, with Code: SUMMER15
Description
Diode Dynamics 20-21 Sierra 2500/3500 LED Sidemarkers HD 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.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
4.9 ★★★★★
Based on 1148 reviews
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Product Reviews
★★★★★ 5
GREAT MAP
Format: Paperback
I need one of these in all my cars
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Reviewed in the United States on March 18, 2025
★★★★★ 4
Almost
Format: Paperback
As far as “off road” don’t expect every road to be included.
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Reviewed in the United States on September 30, 2023
★★★★★ 5
Map
Format: Paperback
Use it when I needed it. Stays in car, you just never know
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Perfect for camping and adventures.
Format: Paperback
I absolutely love these books.
They tell you everything you need to know for camping and to go on adventures.
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Reviewed in the United States on October 5, 2025
★★★★★ 5
The best
Format: Paperback
For my use these are the best travel atlas out there. The recreation map section has details about camp sites,fishing and places of interest. The road map has great detail on smaller roads and info on land ownership, great for boondock camping. If you hunt, fish, camp this is the one you want.
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Reviewed in the United States on June 12, 2023