Reviewed By Kevin R (Silverdale, WA) Reviewed for a 2015 GMC Sierra —8/6/2015 6:06 AM
I installed the cover myself. It took about 2 hours primarily due to poor instructions on the clamping and shimming process. The instructions, website installation pictures and video all skip this process. Also, it refers to breaking off a tab under the rail to properly position the clamp on a GMC Sierra, but fails to mention that it is the retaining clip for the rail cap. The slats in the cover rattle at highway speeds enough to shut the rear sliding window.