2002 Chevrolet Avalanche Owner's Manual - Page 151

All-Weather Cargo Area Your vehicle is designed to operate in many different configurations (cargo panels on or off, Midgate up or down) and is equipped with features that will help the vehicle resist the elements. Some of the features that help with this include the top drain grates, side rail channels, Midgate drain and cargo area floor drains. Depending on the conditions in which the vehicle is used, you may need to perform some maintenance to the top drain grates, side rail channels, Midgate drain and cargo area floor drains. This will help ensure that they operate properly. 7. Push the latches away from you (start with the left latch) to lock the panel in place. You should hear a click when each latch locks correctly. 2-83