Jeep grand cherokee SRT 2015 Owner's Manual page 105

THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 103
2
Pulling Down The Carpet Floor Panel To Access Top Top Tether Strap Anchorage (Located on Seatback)
Tether Strap Anchorage
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