GMC Acadia 15919282 Owner's Manual page 47

1.2. Recline the seatback to the
full reclined position.
Make sure the second row
bench seatbacks are aligned
at the same angle before
placing the child restraint on
the seat. Make sure the third
row bench seatbacks are
both upright before placing
the child restraint on
the seat.
1.3. Put the child restraint on
the seat.
1.4. Attach and tighten the lower
attachments on the child
restraint to the lower
anchors.
2. If the child restraint manufacturer
recommends that the top tether
be attached, attach and tighten
the top tether to the top tether
anchor, if the vehicle has one.
Refer to the child restraint
instructions and the following
steps:
2.1. Find the top tether anchor.
2.2. If the anchor is covered,
flip open the cover to
expose the anchor.
Seats and Restraint System
2.3. Route, attach and tighten
the top tether according
to your child restraint
instructions and the
following instructions:
If the position you are using
does not have a headrest or
head restraint and you are
using a single tether, route
the tether over the seatback.
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