GMC 2004 Canyon Owner's Manual page 52

Lower Anchorages and Top Tethers
for Children (LATCH System)
Your vehicle may be equipped with the LATCH System.
If it is you will find anchors (A) in the second row
outboard seating positions (crew cab and extended cab)
and in the front passenger position (regular cab and
extended cab without rear seats).
This system, designed to make installation of child
restraints easier, does not use the vehicle's safety belts.
Instead, it uses vehicle anchors (A, B) and child
restraint attachments to secure the restraints. Some
restraints also use another vehicle anchor to secure a
top tether strap (C).
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