Reviewed By Robert R (SHENANDOAH, IA) Reviewed for a 2012 GMC Sierra —11/9/2015 11:51 AM
These were easy to install and i even had a spray in bedliner i had to get off first. Just took a sharp utility knife and scored around the knockouts and it peeled right off. Knockouts came right out. Took me 20 minutes total to install 6. Look great and work great.