Chevrolet 2008 Colorado Owner's Manual page 50

For crew cab models, there are exposed metal lower
anchors for each rear outboard seating position, located
where the seatback meets the back of the seat cushion.
For extended cab models with rear seats, there are
exposed metal lower anchors for each rear seating
position, attached to the back wall, near the seat
cushion.
To assist you in locating the lower anchors, place your
hand in a palm-up position and reach up between
the seat cushion and the seatback.
1-46
To assist you in locating
the top tether anchors, the
top tether anchor symbol
is located on the cover.
Crew Cab
The top tether anchors in a crew cab model are located
on the back wall behind each rear seating position.
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.