GMC SIERRA (14-18): XB LED HEADLIGHTS DIELECTRIC GREASE (RECOMMENDED):NONE they can also be setup

they can also be setup to run as solid on/off style signals too

The XB hybrid headlights are built with UV-coated polycarbonate lenses that will resist the test of time

With the introduction of the new Hybrid version

which is easy to do with their integrated aiming adjusters

GMC SIERRA (14-18): XB LED HEADLIGHTS DIELECTRIC GREASE (RECOMMENDED):NONE they can also be setupFACTS & FIGURES DESCRIPTION NO SUBSTITUTES: How is it possible that GMC built the Sierra with such old school headlights all the way up until the revision on the HD trucks in 2020? Thankfully the new Morimoto XB LED headlights: Look great. Are well built. Have a virtually infinite life span. An unbeatable warranty, and out perform the alternatives. These things are the ideal way to upgrade the performance, and facelift your Sierra's front end at the