At Nilight, find a high-quality lighting solution for 2012 GMC Sierra 1500 Headlights is easy to do. The GMC Sierra is a truck that's famous for its durability and long life, and since it's been on the market for many years, there are a lot of high-quality aftermarket parts for this truck. Some of the most popular headlight assembly options for the GMC Sierra include direct replacements that look like OEM headlights as well as black-out options from brands like Nilight.