Cadillac 2006 DTS - Manual (Page 34)

To unlatch the belt, just push the button on the buckle.
Rear Safety Belt Comfort Guides
Rear shoulder belt comfort guides will provide added
safety belt comfort for older children who have outgrown
booster seats and for small adults. When installed on
a shoulder belt, the comfort guide better positions
the belt away from the neck and head.
There is one guide for each outside passenger position
in the rear seat. Here is how to install a comfort
guide and use the safety belt:
1. Remove the guide from its storage pocket on the
side of the seatback.
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