2011 Chevrolet Avalanche Owner's Manual - Page 128

4-4 Storage Side Rail Channels To remove each drain grate, do the following: 1. Remove the cargo panels. See Cargo Cover Panels on page 4‑6 for more information. To replace the drain grate: 1. Line up the clips on the vehicle with the slots in the grate and firmly push the grate down. 2. Grasp the edges of the grate and pull it out from the vehicle. Flush the drain with clean water. 2. Do not force the grate. If it does not clip into place, realign the clips with the holes and try again. The side rail channels are located on top of both sides of the cargo area. Flush them out with clean water if debris collects inside of them. Carefully load cargo into the cargo area, so that the rails do not get damaged.