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The Diode Dynamics smoked sidemarker set provides a direct plug-and-play upgrade for GMC Sierra HD 2020+ fender lights, delivering a fully illuminated housing and a dynamic startup animation. The optional sequential turn-signal feature uses the included harness for an animated amber signal. These LED sidemarkers balance a darker aesthetic with OEM fit-and-finish, retroreflector optics, and straightforward installation without vehicle modifications.
Diode Dynamics 20-21 Sierra 2500/3500 LED Sidemarkers HD Smoked Set
