Cadillac CTS Owner's Manual page 285

284 Vehicle Care
Number Usage
*1 Electronic limited
slip differential/DC
DC transformer
2 Left window
3 Body control
module 8
*4 A/C inverter
5 Passive entry
passive start
battery 1
6 Body control
module 4
7 Heated mirrors
8 Amplifier
9 Rear window
demister
10 Glass break
*11 Trailer connector
12 OnStar (if equipped)
13 Right window
14 Electric parking
brake
15 Not used