GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 DeVille 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Harness Routing Views
Figure 1:

Left Front Corner of the Engine Compartment, Near the Left Side of the Radiator
Object Number: 524879 Size: LF
(1)C102 (Left) and C103 (Right)
(2)S100
Figure 2:

Front Left Corner of the Vehicle, Behind the Headlamp
Object Number: 524907 Size: LF
(1)S106 (Left) and S109 (Right)
(2)S105 (Left) and S108 (Right)
(3)S107 (Left) and S110 (Right)
Figure 3:

Right Lower Corner of the Engine Compartment, Near the Base of the Strut Tower
Object Number: 524921 Size: LF
(1)P102
Figure 4:

Left Side of the Engine Compartment, Near the Thermostat Housing
Object Number: 524923 Size: LF
(1)P115
(2)C100
Figure 5:

Left Rear of the Engine Compartment
Object Number: 524948 Size: LF
(1)C101
(2)S104
(3)S103
(4)P100
Figure 6:

Engine Compartment, Top of Engine
Object Number: 1394556 Size: MF
(1)C139 (C140 Similar)
(2)Ignition Coil/Module 8 (7 similar)
(3)Ignition Coil/Module 6 (5 similar)
(4)Ignition Coil/Module 4 (3 similar)
(5)Ignition Coil/Module 2 (1 similar)
Figure 7:

Engine Compartment, Right Rear Corner of the Engine
Object Number: 524937 Size: LF
(1)S101
(2)S102
(3)C107
(4)C109
Figure 8:

Center Rear of the Engine Compartment
Object Number: 524931 Size: LF
(1)C110
(2)P103
(3)C111
(4) S111
(5)P101
Figure 9:

Center Front of the Passenger Compartment, Below the Instrument Panel
Object Number: 524935 Size: LF
(1)S204
(2)S203
(3)S202
Figure 10:

Passenger Compartment, Left Side of the Instrument Panel
Object Number: 524991 Size: LF
(1)Instrument Cluster
(2)S206
(3)S205
(4)S200
(5)Instrument Cluster C2
(6)Instrument Cluster C1
(7)S232
Figure 11:

Passenger Compartment, Top Left of the Instrument Panel
Object Number: 524986 Size: LF
(1)Head-Up Display
(2)S201
(3)Head-Up Display Connector
Figure 12:

Front Center of the Headliner
Object Number: 524880 Size: LF
(1)S303
(2)S304
(3)S305
(4)S306
Figure 13:

Above the Left Side of the Instrument Panel
Object Number: 524947 Size: LF
(1)C200
(2)S210
(3)S211
Figure 14:

Passenger Compartment, behind RF Kick Panel
Object Number: 1401965 Size: LF
(1)S216
(2)S217
(3)Dash Integration Module (DIM)
(4)G201
(5)G204 (w/WC2/WC8)
Figure 15:

Under the Right Side of the Instrument Panel, Near the Blower Motor
Object Number: 524943 Size: LF
(1)C203
(2)S209
(3)S208
(4)S207
Figure 16:

Under the Right Side of the Instrument Panel Top Pad
Object Number: 539223 Size: LF
(1)C204
Figure 17:

Under the Right Side of the Instrument Panel, Right of the Blower Motor
Object Number: 525001 Size: LF
(1)S215
(2)Blower Motor Control Processor
(3)Air Inlet Actuator
Figure 18:

Under the Right Side of the Instrument Panel, Near the Rear of the Instrument Panel Compartment
Object Number: 524946 Size: LF
(1)C201
Figure 19:

Steering Column
Object Number: 531224 Size: LF
(1)S219
(2)C202
(3)C312
(4)S220
(5)S222
(6)S221
Figure 20:

Left Front of the Passenger Compartment, on the Steering Wheel
Object Number: 636727 Size: LF
(1)Steering Wheel Controls C1 (Right Side)
(2)Steering Wheel Controls C2 (Right Side)
(3)Steering Wheel Controls C1 (Left Side)
(4)Steering Wheel Controls C2 (Left Side)
(5)Splices 226-230
Figure 21:

Left Front of the Center Console, Near the Rear Blower Motor
Object Number: 524938 Size: LF
(1)C304
(2)C205
Figure 22:

Left Rear of the Passenger Compartment, Above the Rear Shelf
Object Number: 524932 Size: LF
(1)C305
Figure 23:

Under the Center of the Instrument Panel, Behind the Ashtray
Object Number: 524934 Size: MF
(1)C206
Figure 24:

Passenger Compartment, Behind LF Kick Panel
Object Number: 1401960 Size: LF
(1)S212
(2)C500 (C600 Similar)
(3)G203 (w/WC2/WC8)
(4)S213
Figure 25:

Middle of the Left Front Door, Behind the Door Trim Panel
Object Number: 524940 Size: LF
(1)S602
(2)S603
(3)P601(RF) P501 (LF)
(4)P600
(5)C601 (Right) C501 (Left)
(6)Driver Door Module (DDM) (Passenger Front Door Module (PFDM) Similar)
Figure 26:

Left Front Door, Behind the Door Trim Panel
Object Number: 524881 Size: LF
(1)S500
(2)P500
Figure 27:

Left Front Door, Behind the Center of the Door Panel
Object Number: 524895 Size: MF
(1)S501
(2)S502
Figure 28:

Right Front Door, Behind the Center of the Door Panel
Object Number: 524905 Size: MF
(1)S600
(2)S601
Figure 29:

Left Rear Door, Behind the Center of the Door Panel
Object Number: 524902 Size: MF
(1)S703
(2)S704
(3)S702
Figure 30:

Right Rear Door, Behind the Door Trim Panel
Object Number: 524893 Size: LF
(1)S800
Figure 31:

Right Rear Door, Behind the Center of the Door Panel
Object Number: 524898 Size: MF
(1)S802
(2)S803
(3)S801
Figure 32:

Passenger Compartment, Under the Right Front Seat
Object Number: 525015 Size: LF
(1)G306
(2)G302
(3)SP302
Figure 33:

Left Side of the Passenger Compartment, Under the Left Front Seat
Object Number: 524941 Size: LF
(1)S329 , S332 (Similar)
(2)C300, C307 (Similar)
(3)S309
(4)S308
Figure 34:

Center Front of the Passenger Compartment, Under the Console
Object Number: 524883 Size: LF
(1)S300
(2)S302
(3)S301
(4)C313
Figure 35:

Front of the Center Console, Below the Ashtray
Object Number: 525041 Size: LF
(1)Blower Motor -- Auxiliary
(2)Blower Motor Resistor Assembly -- Auxiliary
(3)S307
Figure 36:

Passenger Compartment, Under the Left Front Seat
Object Number: 524885 Size: LF
(1)S326
(2)S328 (Left) and S331 (Right)
(3)S327
(4)S324
(5)S330 (Right) and S325 (Left)
Figure 37:

Passenger Compartment, in the Left Front Seat
Object Number: 525053 Size: LF
(1)Seat Belt Tower Motor and Seat Belt Tower Sensor, Passenger Similar
(2)Seat Belt Retractor -- Driver, Passenger Similar
(3) C324, C326 Similar
(4)Seat Rear Vertical Position Sensor -- Driver, Passenger Similar
(5)Seat Rear Vertical Motor -- Driver, Passenger Similar
(6)Seat Front Vertical Position Sensor -- Driver, Passenger Similar
(7)Seat Front Vertical Motor -- Driver, Passenger Similar
(8)Seat Horizontal Motor -- Driver, Passenger Similar
(9)Seat Horizontal Position Sensor -- Driver, Passenger Similar
(10)C323 and C314 -- Driver and C325 Similar
(11)Seat Recline Position Sensor -- Driver, Passenger Similar
(12)Seat Recline Motor -- Driver, Passenger Similar
(13)Seat Massaging Power Lumbar Assembly -- Driver, Passenger Similar
Figure 38:

Right Side of the Passenger Compartment, in the Door Pillar
Object Number: 524928 Size: LF
(1)C800
Figure 39:

Right Rear Door, Behind the Door Trim Panel
Object Number: 524889 Size: LF
(1)C800 and C801 (C700 and C701 Similar)
(2)C802 (C702 Similar)
(3)S800 (S700 Similar)
(4)S801 (S701 Similar)
Figure 40:

Left Rear of the Passenger Compartment, Left Side of the Rear Seat Back
Object Number: 524887 Size: LF
(1) Heated Seat Element -- LR, RR Similar
(2)S333
(3)C306
(4)S334
Figure 41:

Left Rear of the Passenger Compartment
Object Number: 524909 Size: LF
(1)S316 (Left) and S321 (Right)
(2)SP301
(3)S315 (Left) and S320 (Right)
(4)S319 (Left) and S314 (Right)
(5)S313 (Left)
(6)S312
(7)C316 and C317 (Left) and C318 and C319 (Right)
(8)S311 (Left) and S318 (Right)
Figure 42:

Left Rear of the Passenger Compartment, Above the Rear Shelf Panel
Object Number: 525033 Size: LF
(1)Wavetrap/Rear Defogger
(2)C327 (w/V4U/B9Q)
(3)C329 (w/V4U/B9Q)
(4)G303
Figure 43:

Right Rear of the Passenger Compartment, on the Rear Shelf Panel
Object Number: 524936 Size: LF
(1)C303
Figure 44:

Upper Right Rear Corner of the Passenger Compartment
Object Number: 524933 Size: LF
(1)C309
(2)C310
(3)C328
Figure 45:

Right Rear of the Passenger Compartment, Under the Rear Seat
Object Number: 524929 Size: LF
(1)C315
(2)SP304
(3)SP303
Figure 46:

Right Rear of the Passenger Compartment, Under the Rear Seat
Object Number: 524942 Size: LF
(1)C320
Figure 47:

Right Rear of the Passenger Compartment, Under the Rear Seat
Object Number: 524955 Size: LF
(1)Battery (Positive Terminal)
(2)Battery (Negative Terminal)
(3)G300
(4)SP300
(5)G301 (SP301)
(6) Fuse Block -- Rear
(7)S322 (w/V4U)
(8)S323 (w/B9Q)
(9)SP308
(10)SP307
Figure 48:

Passenger Compartment, Behind the Rear Seat Back
Object Number: 898191 Size: MF
(1)C322
(2)C345
(3)Rear Compartment Lamp
Figure 49:

Right Rear Corner of the Rear Compartment
Object Number: 524939 Size: LF
(1)C400
(2)S401
(3)P402
(4)S410
(5)C412 (w/B9Q)
(6)C413 (w/B9Q)
(7)S400
Figure 50:

Right Rear of the Vehicle
Object Number: 524924 Size: LF
(1)C408
(2)S407
(3)S408
Figure 51:

Under the Right Rear of the Vehicle
Object Number: 524925 Size: LF
(1)C420
Figure 52:

Right Side of the Rear Compartment
Object Number: 525038 Size: LF
(1)Rear Object Sensor Control Module
(2)Rear Parking Assist Diagnostic Connector
(3)P401
(4)Tail Lamp Connector
(5)S406
(6)G401
(7)S405
(8)Rear Compartment Lamp
Figure 53:

LF Corner of Rear Compartment
Object Number: 1401968 Size: LF
(1)P400
(2)G402
(3)S411 (w/WC2/WC8)
Figure 54:

Under the Center of the Rear Compartment Lid
Object Number: 524875 Size: LF
(1)S403
(2)S402