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

Features: Plug-and-play compatible with GMC Sierra HD (2020+) fender lights. Dynamic startup sequence with animated effect. Fully illuminated housing with a dual-lens design for an even glow. Optional sequential turn signal feature with a plug-and-play wiring harness. OEM-grade construction and perfect fitment. Engineered and assembled in the USA.

Overview: These LED sidemarkers are plug-and-play replacements for the factory fender lights, illuminating the entire width of the housing for a distinctive look and brighter appearance. You can choose from three lens color options to match your desired style.

Unique startup: Both the standard and sequential models feature a unique startup sequence. Each time the sidemarkers turn on, they light up in an intense amber color starting from the center and spreading outward before returning to a steady running light mode.

Sequential turn signal: The sequential option adds enhanced functionality. Whenever the turn signal is activated, the sidemarkers illuminate in a sequencing amber pattern to clearly indicate signaling, using the included plug-and-play harness connected at the headlight.

Options: Amber lenses match the original sidemarkers and are DOT/SAE compliant. Smoked lenses deliver a darker appearance that pairs well with black or gray vehicles, while clear lenses offer a transparent look while retaining retroreflector optics.

• Modern LED replacement for your factory sidemarker lamp
• Modern LED replacement for your factory sidemarker&nbsp
• Plug-and-play installation no modification needed
• OEM-grade retroreflector optics
• Engineered and assembled in USA
• OEM fit-and-finish
• lamp

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