GMC Sierra Hybrid 2011 Owner's Manual page 12

4-4 Storage
Opening the Tonneau Cover
1. Turn both of the rear handles
inward to release compression.
2. Pull the clamp down and turn the
assemblies to disengage them
from the lip of the pickup box.
3. Open the cover to expose the
handles.
4. Align the clamp assembly
bolt (A) with the retention
feature (B).
5. Turn the handle assembly and
clamp assembly bolt
sideways (A) into the slot of the
retention feature (B).
6. The handle should lie flat on the
panel with the handles facing
inward. Press firmly to secure.
This step must be done before
stowing the cover.
7. Fold the cover forward.
8. Remove the retaining strap from
the bow. Connect the retention
buckle ends. One end is located
on the front of the tonneau cover
behind the cab and the other
end is on the tonneau cover
9. Pull on each strap to make sure
both buckles are attached.