Buick 2006 Rendezvous Owner's Manual page 62

In order to use the LATCH system in your vehicle,
you need a child restraint equipped with LATCH
attachments. The child restraint manufacturer will
provide you with instructions on how to use the child
restraint and its attachments. The following explains
how to attach a child restraint with these attachments
in your vehicle.
Your vehicle has lower anchors and top tether anchors.
Your child restraint may have lower attachments and
a top tether.
Not all vehicle seating positions or child restraints have
lower anchors and attachments or top tether anchors
and attachments.
1-56
Lower Anchors
Lower anchors (A) are metal bars built into the vehicle.
There are two lower anchors for each LATCH seating
position that will accommodate a child restraint with
lower attachments (B).