Review on DNA Motoring HL-LB-SIERRA99-BK-SM-CL1 4PCs LED Daytime Running Light Strip Headlight with Bumper Lamp Set for 1999-2007 GMC Sierra and Yukon, in Black Smoked Clear by Brian West

Installed them on my 01 Yukon in 15 minutes during my work break. The only reason they don't get a higher rating is that it would have been nice to have detailed instructions on how to connect the LED strip and they were a little careful when connecting. These lights simply use your existing lightbulbs. So you can upgrade the bulbs if you want, but for novelty/aesthetic reasons I'll have to figure out how to hook up the lightstrip at some point. They should be fine if you have the patience to play around with them/play the jigsaw game. Aside from the snug fit and lack of instructions on how to connect the LED, they work great for me.