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

FeaturesPlug-and-play compatible with GMC Sierra HD 2020+ fender lightsDynamic startup sequence with animated effectFully-illuminated housing with dual-lens design for an even glowOptional Sequential turn signal feature with plug-and-play wiring harnessOEM-grade construction and perfect fitmentEngineered and assembled in USAOverviewUpgraded 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.OptionsAmber: 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.
Modern LED replacement for your factory sidemarker lamp. Plug-and-play installation no modification needed. OEM fit-and-finish. OEM-grade retroreflector optics. Engineered and assembled in USA.
Included in the box: Four (4) replacement sidemarkers . Two (2) wiring harnesses . Ten (10) fender clips . Four (4) rubber plugs.

Fitment:
GMC Sierra 2500 HD AT4 2020
GMC Sierra 2500 HD AT4 2021
GMC Sierra 2500 HD AT4 2022
GMC Sierra 2500 HD AT4 2023
GMC Sierra 2500 HD Base 2020
GMC Sierra 2500 HD Base 2021
GMC Sierra 2500 HD Base 2022
GMC Sierra 2500 HD Denali 2020
GMC Sierra 2500 HD Denali 2021
GMC Sierra 2500 HD Denali 2022
GMC Sierra 2500 HD Denali 2023
GMC Sierra 2500 HD Pro 2023
GMC Sierra 2500 HD SLE 2020
GMC Sierra 2500 HD SLE 2021
GMC Sierra 2500 HD SLE 2022
GMC Sierra 2500 HD SLE 2023
GMC Sierra 2500 HD SLT 2020
GMC Sierra 2500 HD SLT 2021
GMC Sierra 2500 HD SLT 2022
GMC Sierra 2500 HD SLT 2023