Cadillac STS (2008 - 2009) - fuse box diagram - Auto Genius Oct 19, 2016Cadillac STS (2008 – 2009) – fuse box diagram. Year of production: 2008, 2009. Underhood Fuse Block. The underhood fuse block is located in the front of the engine compartment on the passenger’s side of the vehicle. Cadillac STS-V - 2008 Fuse Box Diagram Cadillac; STS-V - 2008 Fuse Box; If the vehicle is locked using the keyless access. transmitter and the trunk lid, hood or a door is open or. not closed completely, the security light will flash for. 60 seconds and then turn off. At this time, the. theft-deterrent system is armed but the alarm will not.