2006 Cadillac STS Owner's Manual - Page 422

Rear Underseat Fuse Block Removing the Rear Seat Cushion Notice: If you touch the exposed wires with the metal on the seat cushion, you could cause a short that could damage the battery and or wires. Avoid contact between the rear seat and the fuse center whenever you remove or reinstall the rear seat. Do not remove covers from any of the covered parts, and do not store anything under the seats. 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. To reinstall the rear seat cushion, do the following: 5-110