Jeep 2014 Grand Cherokee Owner's Manual page 112

THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 111
6. Remove slack in the tether strap according to the child
restraint manufacturer's instructions.
WARNING!
2
The top tether anchorages are not visible until the
gap panel is folded down. Do not use the visible
cargo tie down hooks, located on the floor behind the
seats, to attach a child restraint tether anchor.
Top Tether Strap Mounting