GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 XLR 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 6L50/6L80/6L90 🢒 Harness Routing Views
Figure 1:

Forward Lamp Harness Routing
Object Number: 1858133 Size: LF
(1)Front Fascia
(2)C120
(3)G102
(4)SP102
(5)Supercharger Coolant Pump Relay (LC3)
(6)C102
(7)Headlamp Module
(8)Battery Tray
(9)C186
(10)C101
(11)C168
(12)C131
(13)SP101
(14)G101
(15)C119
Figure 2:

Headlamp Splices
Object Number: 1863947 Size: LF
(1)Headlamp Assembly-Left
(2)S119
(3)S120
(4)Headlamp Assembly-Right
Figure 3:

G104
Object Number: 1858144 Size: LF
(1)Headlamp Assembly - RH
(2)G104
(3)Battery Tray
Figure 4:

C159, C160
Object Number: 1858087 Size: LF
(1)Engine Harness
(2)C160
(3)Engine Crossmember
(4)C159
Figure 5:

Top of the Engine
Object Number: 1276512 Size: LF
(1)Camshaft Position (CMP) Actuator Solenoid Bank 1 Exhaust
(2)Camshaft Position (CMP) Sensor Bank 1 Exhaust
(3)Camshaft Position (CMP) Sensor Bank 1 Intake
(4)Camshaft Position (CMP) Actuator Solenoid Bank 1 Intake
(5)Manifold Absolute Pressure (MAP) Sensor
(6)C140
(7)Ignition Coil/Module 1
(8)Fuel Injector 1
(9)Ignition Coil/Module 3
(10)Fuel Injector 3
(11)Ignition Coil/Module 5
(12)Fuel Injector 5
(13)Ignition Coil/Module 7
(14)Fuel Injector 7
(15)Fuel Injector 6
(16)Starter
(17)C148
(18)Fuel Injector 8
(19)C139
(20)Ignition Coil/Module 8
(21)Ignition Coil/Module 6
(22)Ignition Coil/Module 4
(23)Fuel Injector 4
(24)Ignition Coil/Module 2
(25)Fuel Injector 2
(26)Camshaft Position (CMP) Actuator Solenoid Bank 2 Exhaust
(27)Camshaft Position (CMP) Sensor Bank 2 Exhaust
(28)Camshaft Position (CMP) Sensor Bank 2 Intake
(29)Camshaft Position (CMP) Actuator Solenoid Bank 2 Intake
(30)Evaporative Emission (EVAP) Canister Purge Valve
(31)Throttle Body Assembly
Figure 6:

Ignition Coil Harness Splices (LC3 Shown LH2 Similar)
Object Number: 1859217 Size: LF
(1)C139
(2)S131
(3)S133
(4)S135
(5)C140
(6)S142
(7)S144
(8)S146
Figure 7:

Engine Harness Routing 1 of 2
Object Number: 1689363 Size: LF
(1)G106
(2)Fuse Block - Underhood
(3)S105
(4)C186 Engine Harness to Forward Lamp Harness
(5)C180 Engine Harness to I/P Harness
(6)C184 Engine Harness to Transmission Harness
(7)C182 Engine Harness to I/P Harness
(8)Engine Control Module (ECM) Connectors
(9)Splice Pack SP106
(10)C148 Engine Harness to Knock Sensor (KS)/Crankshaft Position (CKP) Sensor Jumper Harness
(11)C188 Engine Harness to Starter Solenoid Jumper Harness
Figure 8:

Engine Harness Routing 2 of 2
Object Number: 1689364 Size: LF
(1)S238
(2)S244
(3)S195
(4)G107
(5)S193
(6)S191
(7)G105
Figure 9:

I/P Body Harness Splices - Instrument Panel
Object Number: 1859207 Size: LF
(1)S238
(2)S236
(3)S234
(4)S211
(5)S237
(6)S231
(7)S240
(8)S244
(9)S251
(10)S242
(11)S255
(12)S232
(13)S248
(14)S228
(15)S230
(16)S222
(17)S224
(18)S226
(19)S227
(20)S275
Figure 10:

Steering Wheel
Object Number: 1863944 Size: LF
(1)Inflatable Restraint Steering Wheel Module Coil - C5
(2)S293
(3)Steering Wheel Controls - Right
(4)Horn Switch Contacts
Figure 11:

SP201, SP202, SP205, SP208
Object Number: 1858353 Size: LF
(1)SP201
(2)SP205
(3)I/P Upper Trim Pad
(4)I/P Compartment Door
(5)SP208
(6)SP202
Figure 12:

Instrument Panel Harness
Object Number: 1361208 Size: LF
(1)DLC Connector
(2)C231
(3)C311
(4)Fuse Block - Underhood C3
(5)Fuse Block - Underhood C4
(6)C220
(7)Auxiliary Power Relay
(8)Splice Pack, SP208
(9)C180
(10)C600
(11)C602
(12)Splice Pack, SP202
(13)G202
(14)C380
(15)C382
(16)Splice Pack, SP302
(17)G302
(18)C482
(19)C480
(20)C455
(21)C437
(22)C433
(23)C435
(24)Splice Pack, SP301
(25)G301
(26)C377
(27)C375
(28)C379
(29)Splice Pack, SP201
(30)G201
(31)C501
(32)C503
Figure 13:

I/P Body Harness Splices - Passenger Compartment
Object Number: 1859203 Size: LF
(1)S310
(2)S312
(3)S208
(4)S310
(5)S353
(6)S422
(7)Rear Fascia
(8)S415
(9)S355
(10)S375
(11)S276 (Except Export)
(12)S246
(13)Instrument Panel
Figure 14:

Driver Door
Object Number: 1858118 Size: LF
(1)C555
(2)Outside Rearview Mirror
(3)Outside Rearview Mirror Connectors
(4)S539
(5)C501
(6)C503
(7)S579
(8)S559
(9)Window Motor
(10)Door Latch Assembly
Figure 15:

Passenger Door
Object Number: 1858117 Size: LF
(1)Outside Rearview Mirror
(2)Window Motor
(3)Door Latch Assembly
(4)S660
(5)S680
(6)C666
(7)C600
(8)C607
(9)C911
(10)Outside Rearview Mirror Connectors
Figure 16:

Fuel Tank
Object Number: 1863937 Size: LF
(1)Fuel Pump and Sender Assembly
(2)Evaporative Emission (EVAP) Canister Vent Solenoid
(3)Fuel Tank Pressure (FTP) Sensor
(4)Fuel Level Sensor - Right
(5)C460
(6)C420
(7)Fuel Tank-Right
(8)S460
(9)Fuel Tank-Left
(10)C459
Figure 17:

Transmission Harness Routing
Object Number: 1858066 Size: LF
(1)S420
(2)C420
(3)C400
(4)C440
(5)G402
(6)C439
(7)G401
Figure 18:

Rear Decklid Harness Routing
Object Number: 1858160 Size: LF
(1)Folding Top
(2)C960
(3)S939
(4)C935
(5)C455
(6)C911
(7)S935
(8)S931
Figure 19:

Folding Top Harness Routing
Object Number: 1858080 Size: LF
(1)C333
(2)Intrusion Sensor
(3)Folding Top
(4)C431
(5)C435
(6)Folding Top Pump and Valve Assembly
(7)C911
(8)C455
(9)C433
(10)Folding Top Module
Figure 20:

Folding Top Harness - Splices
Object Number: 1859200 Size: LF
(1)S319
(2)S337
(3)S339
(4)S335
(5)S333
(6)S331
Figure 21:

Rear Fascia Harness Splices
Object Number: 1859212 Size: LF
(1)Rear Object Sensor Harness
(2)S480
(3)S479
(4)Rear Fascia
Figure 22:

Rear Fascia - Export
Object Number: 1863883 Size: LF
(1)Fog Lamp - RR
(2)Backup Lamp - Right
(3)C960
(4)S960
(5)S962
(6)Backup Lamp - Left
(7)Fog Lamp - LR
(8)Rear Fascia