Jeep 2015 Grand Cherokee - Owner Manual - Manual (Page 106)

3. Route the tether strap to provide the most direct path
for the strap between the anchor and the child seat. If
your vehicle is equipped with adjustable rear head
restraints, raise the head restraint, and where possible,
route the tether strap under the head restraint and
Pulling Down The Carpet Floor Panel To Access Top
Tether Strap Anchorage
Top Tether Strap Anchorage (Located on Seatback)
104 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE