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The Diode Dynamics clear sequential sidemarker set is a plug-and-play replacement for GMC Sierra HD 2020+ fender lights, offering full-width illumination and a recognizable animated startup sequence. The sequential turn-signal option uses the supplied harness for a sweeping amber indication. These LED sidemarkers provide OEM-style fit and retroreflector optics with installation that requires no vehicle modification for a cleaner, upgraded appearance.
Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers Clear Set
