1999-2006 GMC Sierra LED Front Sidemarker Bulbs: Looking for upgraded LED Front Sidemarker Bulbs from a reputable brand and value the fact that we've actually tested them on your truck? Our HR Tested kits include all the right components to ensure perfect fit, function, and performance from the upgrade. At Headlight Revolution, we do 1999-2006 GMC Sierra LED lighting upgrades better!

As part of our Sierra Video Series: we showed viewers how to install LED Front Marker Lights on their 1999-2006 GMC Sierra. We supply only the highest quality LED bulbs so you won't have any headaches and they will last a long time. Watch our install video to see how to do the job yourself.

GTR Lighting Carbide Series T10 / 194 / 168 LED Bulbs:

These LED bulbs: will replace any T10 bulb, more commonly called 194/168. Here is the cross reference for this bulb:W5W, 194, 501, 147, 152, 158, 159, 161, 168, 184, 192, 193, 259, 280, 285, 447, 464, 555, 558, 585, 655, 656, 657, 1250, 1251, 1252, 2450, 2652, 2921, & 2825

This package: has 2 LED bulbs and they each feature high-power LED with a crystal like lens diffuser to help spread the light output. These bulbs are perfect for almost any application where they fit. Use them as dome lights, marker lights, blinkers, map lights, floor lights or anywhere!

HR Tested: Here at Headlight Revolution, we've spent the time to install and test all HR Tested products, so we know it'll work exactly as shown and right out of the box! Not only that, but we don't favor one particular brand. We just deliver the best product for the application, period. Be sure to reference our install videos for helpful tips on making the installation process quick, painless, and clear. HR Tested: We ensure fitment and function. You do the install. For other compatible upgrades, use the Buyers Guide on our homepage!