Cadillac 2004 CTS Owner's Manual page 47

Lower Anchorages and Top Tethers
for Children (LATCH System)
Your vehicle has the LATCH system. You'll find
anchors (A) for the rear seat outboard passenger
positions.
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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