1999-2021 GM 1500 194 SMD2 Cool White Sidemarker LED (DIODD0037P) auto-ecodiesel-2014-2023-turbochargers Whether you're tackling rocky trails

Whether you're tackling rocky trails or pushing your rig to its limits

Excludes TRX models

Designed to allow the operator to manually disable the front wheel drive mechanism in 4WD low range

high-contrast light that matches the look of modern OEM LED systems for a premium front-end appearance

Required for vehicles equipped with factory xenon projector headlights (not needed for halogen models)

1999-2021 GM 1500 194 SMD2 Cool White Sidemarker LED (DIODD0037P) auto-ecodiesel-2014-2023-turbochargers Whether you're tackling rocky trailsThe factory sidemarker bulbs on the GMC Sierra 1500 often produce a dim, yellowish glow that dates the truck's appearance and has a limited lifespan. These Sidemarker LEDs solve this by replacing the original incandescent bulbs with a crisp, modern LED upgrade. By choosing the SMD2 model in Cool White, you achieve a clean 6000K appearance with a low profile design that offers reliable illumination and a significant aesthetic improvement over stock.