GMC Sierra 2015 Owner's Manual page 108

Lower Anchor and Top Tether
Anchor Locations
Regular Cab Two-Passenger
Front Seat
Regular Cab Three-Passenger
Front Seat
(Top Tether Anchor): Seating
positions with top tether anchors.
Do not install a child restraint in the
center front seating position. See
Securing Child Restraints (Center
Front Seat) on page 3-57 or
Securing Child Restraints (Rear
Seat) on page 3-57 or Securing
Child Restraints (Front Passenger
Seat) on page 3-61 for more
information.
Seats and Restraints
Crew and Double Cab Rear Seat
(Top Tether Anchor): Seating
positions with top tether anchors.
(Lower Anchor): Seating
positions with two lower anchors.
To assist in locating the lower
anchors on crew cab models, each
seating position with lower anchors
3-47