GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Harness Routing Views
Figure 1:

Splice Pack and Pass-through Locations
Object Number: 803920 Size: LF
(1)SP102
(2)SP203
(3)Pass-through grommet from the engine compartment to the passenger compartment
(4)Pass-through grommet from the passenger compartment to the right front door
(5)SP301
(6)Pass-through grommet from the passenger compartment to the right rear door
(7)SP303
(8)Pass-through grommet from the rear compartment to the right rear underbody
(9)Pass-through grommet from the rear compartment to the left rear underbody
(10)Pass-through grommet from the passenger compartment to the left rear door
(11)SP302
(12)SP300
(13)Pass-through grommet from the passenger compartment to the left front door
(14)SP201
(15)Pass-through grommet from the engine compartment to the passenger compartment
(16)SP200
(17)SP202
Figure 2:

Rear of Engine Compartment
Object Number: 804227 Size: LF
(1)Heated Washer Nozzle - Left and Right Connectors
(2)I/P Wiring Harness
Figure 3:

Lower Left of the Engine Compartment
Object Number: 804233 Size: LF
(1)G101
(2)C105 (V8)
(3)C104 (V6) or C107 (V8)
(4)Wiring Harness Pass-through Grommet
Figure 4:

Lower Right of the Engine Compartment
Object Number: 804240 Size: LF
(1)C103
(2)S204
(3)Underhood Fuse Block C4
Figure 5:

I/P Harness 2 of 2
Object Number: 804254 Size: LF
(1)C203
(2)C202
Figure 6:

I/P Harness (1 of 2)
Object Number: 804246 Size: LF
(1)Inflatable Restraint I/P Module Connectors
(2)C201
(3)SP201
(4)C304
(5)C205
(6)Inflatable Restraint Steering Wheel Module Connectors
(7)G200
(8)C200
(9)SP203
Figure 7:

Body Harness (1 of 2)
Object Number: 803928 Size: LF
(1)G306
(2)Rear Integration Module (RIM) Connectors
(3)Rear Defogger Connectors
(4)TV Tuner Connector (Japan Only)
(5)Traffic Information Receiver Module Connector (Japan only)
(6)Inflatable Restraint Roof Rail Module Connector
(7)C305
(8)C308
(9)C300
(10)C301
(11)C200
(12)C205
(13)C304
(14)C303
(15)G201
(16)C201
(17)C306
(18)C307
(19)C312
Figure 8:

Body Harness (2 of 2)
Object Number: 803929 Size: LF
(1)Fuse Block- Right Rear
(2)Fuse Block- Left Rear
(3)C700
(4)SP302
(5)SP300
(6)G307
(7)C500
(8)G200
(9)G306
(10)G201
(11)C600
(12)SP301
(13)C800
Figure 9:

Headliner Harness
Object Number: 803968 Size: LF
(1)C310
(2)Dome Lamp - Rear
(3)C410
(4)Radio Antenna Module C1
(5)C305
(6)C311
(7)Noise Compensation Microphone
(8)Sunshade - Left
(9)Upper Speaker - LF
(10)Inside Rear View Mirror (ISRVM)
(11)Sunshade - Right
(12)Upper Speaker - RF
(13)Front Glass Antenna Snap Connection
(14)Front Glass Antenna Snap Connection
(15)Overhead Console Courtesy Lamp
Figure 10:

Passenger Compartment - Under Left Side of I/P
Object Number: 804268 Size: LF
(1)C200
(2)C500 Pass-through Location Hole
(3)C500
(4)G200
(5)C203
Figure 11:

Passenger Compartment - Under Right Side of I/P
Object Number: 804267 Size: LF
(1)Pass-through Grommet
(2)C600 Pass-through Location Hole
(3)C201
(4)Inflatable Restraint I/P Module (Harness Side)
(5)G201
(6)C600
Figure 12:

Passenger Compartment, Between the Left Doors
Object Number: 804269 Size: LF
(1)Pass-through Grommet
(2)SP300
(3)SP302
(4)G307
Figure 13:

Passenger Compartment - Behind Front Seats
Object Number: 804271 Size: LF
(1)Splice Pack SP303
(2)Fuse Block - Right Rear
(3)Fuse Block - Left Rear
(4)G306 (Hidden)
(5)Inflatable Restraint Sensing and Diagnostic Module (SDM)
Figure 14:

Passenger Compartment, Between the Right Doors
Object Number: 804270 Size: LF
(1)SP301
(2)Pass-through Grommet
(3)C307
(4)C306
Figure 15:

Door Components
Object Number: 803967 Size: LF
(1)Right Rear Door Module (RRDM), LRDM Similar
(2)C801
(3)Door Latch Assmebly - RR, LR Similar
(4)S801
(5)C800
(6)Pass-through Grommet
(7)Window Motor - RF, LF Similar
(8)Door Latch Assembly - RF, LF Similar
(9)C601
(10)Front Passenger Door Module (FPDM), DDM Similar
(11)Right Front Door Pass-through Grommet, Left Similar
(12)C600
(13)S600
(14)S601
Figure 16:

Left Rear of the Vehicle
Object Number: 803972 Size: LF
(1)C420
(2)Evaporative Emissions (EVAP) Canister Vent Solenoid
(3)Fuel Tank Pressure Sensor
(4)Fuel Pump and Sender Assembly
(5)Fuel Tank Pressure Sensor
(6)Fuel Pump and Sender Assembly
(7)Pass-through Grommet
(8)S301
(9)G401 (Hidden)
Figure 17:

Passenger Compartment, Under the Driver Seat
Object Number: 804265 Size: LF
(1)C304
(2)C312
(3)S309
(4)C301
(5)S308
(6)C205
Figure 18:

Passenger Compartment - Left Sail Panel
Object Number: 804273 Size: LF
(1)G303
(2)C308
(3)Inflatable Restraint Roof Rail Module - Driver Connector
(4)C305
(5)Rear Defogger Connector C1
Figure 19:

Passenger Compartment - Right Sail Panel
Object Number: 804272 Size: LF
(1)Radio Antenna COAX Connector
(2)C311
(3)Cellular Antenna COAX Connector
(4)Inflatable Restraint Roof Rail Module - Passenger Connector
Figure 20:

Rear of the Vehicle
Object Number: 803970 Size: LF
(1)C421
(2)Rear Compartment Lid
(3)Rear Compartment Lid Release Actuator Connector
(4)Rear Compartment Lid Release Actuator
(5)S400
(6)Pass-through Grommet
(7)G401
(8)G402
(9)Pass-through Grommet