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Diode Dynamics

Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers Smoked Set

$399.95 In Stock Pre-Order Sold out
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CODE: DIODD5152

1-4 DAYS DELIVERY

100% ORIGINAL AND QUALITY

24 MONTHS GUARANTEE

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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

Our Return Policy:

We want you to be completely satisfied with your purchase from Chief Motorsports. If for any reason you are not satisfied, you may return most new, unopened items within 30 days of delivery for a full refund or exchange.

To be eligible for a return, items must be in their original packaging and in the same condition that you received them. Some items are exempt from being returned, including custom orders, special orders, and used items. These items are sold "as is" and are not eligible for return or exchange.

To initiate a return, please contact our customer service team by email or phone to request a Return Merchandise Authorization (RMA) number. We will provide you with instructions on how to return the item(s) and a prepaid shipping label (if applicable).

Please note that original shipping charges are non-refundable and the customer is responsible for return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance as we cannot be responsible for items that are lost or damaged during transit.

Once we receive the returned item(s) and confirm that they meet the return requirements, we will process the refund or exchange within 7 business days.

We reserve the right to refuse returns or issue partial refunds for items that do not meet the above return requirements.

If you have any questions about our return policy, please don't hesitate to contact us.

Our Warranty Policy:

Chief Motorsports does not cover manufacturer's warranties. All warranties and guarantees are provided directly by the manufacturer. If you have any issues with a product that you believe is covered under warranty, please contact the manufacturer directly for assistance.

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