Chevrolet Avalanche Owner's Manual page 135

Always use the storage bag to store the cargo
panels during driving.
Before storing the cargo panels, be sure that the
latches are in the locked position. The latches are in
the locked position when they are parallel to the
front and back edge of the panel.
1. Secure the storage bag
in the cargo storage
area by attaching
the four clips on the
cargo bag to the
tie-down locations on
either side of the
storage area.
Use the following instructions for the proper storage
sequence and location for each panel:
Panels 3, 2, 1 Loaded
2-65