GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 STS 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Ground Views
Figure 1:

Forward Lamp Splices and Grounds
Object Number: 1970127 Size: LF
(1)J106
(2)J114
(3)J110
(4)J111
(5)J107
(6)G104
(7)J116
(8)G110
Figure 2:

Engine - Front (LLT)
Object Number: 1972228 Size: LF
(1)G104
(2)X101
(3)G109
Figure 3:

Engine - Left Rear (LLT)
Object Number: 1972223 Size: LF
(1)X160
(2)X161
(3)G112
(4)X102
Figure 4:

Engine - Right Rear (LH2)
Object Number: 1970182 Size: LF
(1)X139
(2)X100
(3)X101
(4)X113
(5)G107
(6)G106
(7)Valve Cover Ground
(8)G100
(9)G107 Ground Strap
(10)104
Figure 5:

Instrument Panel Harness - Engine Compartment
Object Number: 1970194 Size: LF
(1)X103
(2)X102
(3)JX201
(4)X116
(5)G101
(6)X111
(7)X112
Figure 6:

Body Harness - Left Front Passenger Compartment
Object Number: 1970225 Size: LF
(1)X301
(2)X300
(3)G200
(4)X205
(5)X500
(6)X204
(7)X213
(8)X212
(9)X201
(10)G307
(11)JX300
Figure 7:

Body Harness - Right Front Passenger Compartment
Object Number: 1970229 Size: LF
(1)X217
(2)X200
(3)X600
(4)X307
(5)X800
(6)G306
(7)X318
(8)JX303
(9)G201
Figure 8:

Body Harness - Left Rear Cargo Compartment
Object Number: 1970234 Size: LF
(1)X308
(2)JX305
(3)X320
(4)X320
(5)Windshield Wiper Inhibit Relay (WCV)
(6)X302
(7)G402
(8)Rear Shelf
Figure 9:

Body Harness - Right Rear Cargo Compartment 1 of 2
Object Number: 1970256 Size: LF
(1)G403
(2)X310
(3)Rear Decklid
(4)JX304
(5)X305
Figure 10:

Body Harness - Right Rear Cargo Compartment 2 of 2
Object Number: 1488394 Size: LF
(1)Right Rear Fender
(2)G401
(3)Trunk Compartment Floor Panel