Chevrolet avalanche 2002 用户手册

Your vehicle also has four cargo

-

area floor drains

located under the cargo mat near the sides of the cargo
area. These drains should be cleaned periodically to
allow water to exit the cargo area.

The cargo mat has cutouts for the drains. You can flush
the drains through the cutouts, but if the cargo area is
extremely dirty you can lift up the edges of the cargo
floor mat (or take the whole mat out) and flush the
drains with water.

There are eight cargo tie downs in the rear cargo area.
You can use these to strap cargo in.

The tie downs are also used to secure the cargo cover 
panel storage bag or the tonneau cover storage bag 
if your vehicle is equipped with either. For more
information see “Cargo Cover Panels” and “Tonneau
Cover” in the Index.