Cadillac 2003 CTS Owner's Manual page 391

Removing the Rear Seat Cushion
NOTICE:
A fuse center is located under the rear seat
cushion. To help avoid damage to the fuse
center, be careful when removing or reinstalling
the seat cushion.
To remove the rear seat cushion, do the following:
1. Pull up on the front of the cushion to release the
front hooks.
2. Pull the cushion up and out toward the front of
the vehicle.
3. Slide the cushion out one of the rear doors and set
it aside.
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Rear Pass Through Seat
6-65