2003 Buick Rendezvous Owner's Manual - Page 71

Lower Anchorages and Top Tethers for Children (LATCH System) Your vehicle has the LATCH system. You'll find anchors (A) in the second row outside passenger positions. To assist you in locating the lower anchors for this child restraint system, each seating position with the LATCH system will have latches between the seatback and cushion. In order to use the system, you need either a forward-facing child restraint that has attaching points (9) at its base and a top tether anchor (C), or a rear-facing child restraint that has attaching points (B), as shown here. 1-64