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The Diode Dynamics amber sidemarker set is a plug-and-play LED replacement for GMC Sierra HD 2020+ fender lights, offering full-width illumination and an animated startup sequence. The sequential turn signal option uses the included harness to provide an amber sequencing pattern for signaling. These sidemarkers maintain OEM fitment and retroreflector optics while giving a brighter, more distinctive look with simple installation.
Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sidemarkers - Amber Set
