GM Chevrolet Avalanche - Manual (Page 147)

Cargo Area Floor Drains
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.
Top-Box Storage
Your vehicle is equipped with top-box storage units on
both side of the vehicle. The passenger side top
box contains the tools you will need to change a
flat tire.
Use the ignition/door key to unlock/lock it. Press the key
cylinder button and swing the lid open. Turn on the
cargo lamps (if equipped) if you need more light inside.
See “Cargo Lamps” under Exterior Lamps on
page 3-14 for more information on cargo lamps.
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