Buick 2007 Rendezvous - Manual (Page 51)

Center Rear Passenger Position
Lap-Shoulder Belt
If your vehicle has a bench seat, someone can sit
in the center position.
When you sit in the center seating position, you
have a lap safety belt, which has no retractor. You
also have a shoulder belt, which has a retractor.
In order to have the protection of the shoulder belt,
you must first connect it to the lap belt.
1. Remove the shoulder belt from its stowage
location in the roof and pull it all the way
down to the lap belt.
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