GMC 2012 Sierra Series Owner's Manual page 118

3-54 Seats and Restraints
For regular cab models, there is an
anchor symbol on the covers to
assist you in locating the top tether
anchors.
Regular Cab
Do not install a child restraint in the
center seat position. See Securing
Child Restraints (Rear Seat
Position) on page 3 60 or Securing
Child Restraints (Center Front Seat
Position) on page 3 62 or Securing
Child Restraints (Right Front Seat
Position) on page 3 62 for more
information.
For regular cab models, the top
tether anchors are located under
covers on the back panel behind the
passenger seat. Remove the trim
plug to access the anchor. Be sure
to use an anchor located on the
same side of the vehicle as the
seating position where the child
restraint will be placed.
I n f o r ma t i o n P r o v i d e d b y :
Crew Cab Shown, Extended Cab
Similar
For crew and extended cab models,
the top tether anchors are the loops
located near the top of the seatback
for each rear seating position.
These loops will be used to route
the top tether through, as well as, to
secure the top tether in the vehicle.
Be sure to use an anchor (loop)
located on the same side of the
vehicle as the seating position
where the child restraint will be
placed.