GMC 2018 Acadia Denali Owner's Manual page 110

All Terrain
The rear trays do not need to be
removed to access the spare tire.
Rail and Divider Option
Cargo Management System
Cargo Management System
Unlock
Storage
Cargo Management System
Installation
1. Turn both knobs to the unlock
position.
2. Slide the divider along the rail
to the desired position until it
clicks into place.
3. Make sure the divider is locked
into place in the rail grooves.
Cargo Management System Lock
4. Turn both knobs to the lock
position.
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