Instant Response. The factory incandescent 194 bulb lghts up in a glow which takes a moment to turn on. A modern LED upgrade provides instant response which can alert other drivers on the road earlier while also providing a modern LED appearance. This LED is a great upgrade in both style and function.

Brightness. All Diode Dynamics LED lighting is rated with accurate measured lumen figures not calculations or guesses. We test the true output in-house and provide you the real numbers to compare.

Reliability. Diode Dynamics LEDs are built with constant-current inductive circuitry along with transient suppression. They are tested by our engineering team with a device that replicates years of voltage spikes like the ones generated each time the alternator starts and stops on your Sierra 1500.

This is what kills most LED bulbs over time but just like factory components Diode Dynamics LEDs are designed with built-in circuit protection. While more expensive than simple bulbs this allows Diode Dynamics LEDs to last for years with no flickering or failure.

Experience. After over a decade in business Diode Dynamics is one of the most trusted names in automotive LED lighting. We directly assemble and engineer our own products in the United States allowing for higher quality and performance with the newest and brightest LED technology.

Whether it's a GMC or anything else we pride ourselves in offering only the best possible LED solutions.
Features:

• Intense red LED illumination
• Plug and play no modification with factory bulb size
• Instant on/off for faster response
• Sold As: Each