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The Diode Dynamics sequential sidemarker set is a direct, plug-and-play replacement for GMC Sierra HD fender lights from 2020 onward. These LED sidemarkers illuminate the full housing for a brighter, distinctive look and include a dynamic startup animation. An optional sequential turn-signal mode uses the included plug-and-play harness. Choose amber, smoked, or clear lenses for different styling while retaining OEM-grade fit and optics.
Diode Dynamics 20-21 Sierra 2500/3500 HD LED Sequential Sidemarkers Smoked Set
