GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Luggage Compartment/Rear of Vehicle Component Views
Figure 1:

Left Rear Cargo Compartment
Object Number: 1971825 Size: LF
(1)Audio Amplifier
(2)Vehicle Stability Control Module (JL7)
Figure 2:

Right Rear Cargo Compartment
Object Number: 1971821 Size: LF
(1)Electronic Suspension Control (ESC) Module (F55)
(2)Vehicle Communication Interface Module (VCIM) (UE1)
Figure 3:

Rear Compartment Lid
Object Number: 1971930 Size: LF
(1)Rear Compartment Lid Latch
(2)Rear Decklid
Figure 4:

Rear Fascia and Decklid
Object Number: 1972006 Size: LF
(1)Tail Lamp - Left
(2)Marker Lamp - Left Rear
(3)License Lamp - Left and License Lamp - Right
(4)Center High Mounted Stop Lamp (CHMSL)
(5)Tail Lamp - Right
(6)Marker Lamp - Right Rear
(7)Object Alarm Sensor - Right Rear Corner
(8)Fog Lamp - Right Rear (T79)
(9)Object Alarm Sensor - Right Rear Middle
(10)Fog Lamp - Left Rear (T79)
(11)Back Up Lamp - Right
(12)Object Alarm Sensor - Left Rear Middle
(13)Object Alarm Sensor - Left Rear Corner
(14)Backup Lamp-Left
Figure 5:

Side Object Sensors (UFT)
Object Number: 1985838 Size: LF
(1)Side Object Sensor - Left (UFT)
(2)Side Object Sensor - Right (UFT)