GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Forward Lamp Harness Routing


Object Number: 1852023  Size: LF
(1)X103
(2)X110
(3)J145
(4)J103
(5)G105
(6)G101
(7)J128
(8)J129
(9)J146
(10)J115
(11)G102
(12)X111
(13)X102
(14)J105
(15)J147
(16)J101
(17)J109
(18)J131
(19)J100
Figure 2:

Engine Harness Routing 1 of 2


Object Number: 1889817  Size: LF
(1)Fuse Block - Underhood
(2)X162
(3)Engine Control Module (ECM)
(4)Engine Control Module (ECM) Bracket
(5)Splice J137
(6)Splice J142
(7)Electronic Brake Control Module (EBCM)
(8)Splice J104
(9)Engine Harness
Figure 3:

Engine Harness Routing 2 of 2 (LNF)


Object Number: 1865714  Size: LF
(1)Splice J123
(2)Splice J124
(3)Engine Harness
(4)Splice J121
(5)X100
(6)Fuse Block - Underhood
(7)G103
(8)Splice J140
(9)Splice J107
Figure 4:

Engine Harness Splices (LNF)


Object Number: 1851833  Size: LF
(1)J116
(2)J117
(3)J106
(4)J123
(5)J107
(6)J140
(7)J108
(8)J110
(9)J102
(10)J137
(11)J141
(12)J104
(13)J126
(14)J121
Figure 5:

HVAC Module Components 1 of 2


Object Number: 1631787  Size: LF
(1)Air Temperature Actuator - Right
(2)Air Temperature Actuator - Left
(3)Mode Actuator
(4)Ambient Light Sensor (Except T62)
(5)Air Vent Grille
(6)HVAC Control Module
(7)X216
(8)X218
(9)Blower Motor
(10)Blower Motor Connector
(11) Blower Motor High Speed Relay
(12)Blower Motor Resistor
(13)X208
Figure 6:

Instrument Panel Body Harness Routing - Left and Right Side of Instrument Panel


Object Number: 1851959  Size: LF
(1)X500
(2)X501
(3)X600
(4)Inline Fuse - Right Rear Lamps
(5)Inline Fuse - Left Rear Lamps
(6)Splice Pack JX200
(7)G300
Figure 7:

Instrument Panel Body Harness Splices - Engine Compartment and Instrument Panel


Object Number: 1851852  Size: LF
(1)J135
(2)X120
(3)X122
(4)J134
(5)J221
(6)J222
(7)J210
(8)Upper Windshield Frame
(9)J203
(10)J209
(11)J207
(12)J204
(13)J208
(14)J211
(15)J212
(16)J214
(17)J240
(18)Data Link Connector (DLC)
(19)J219
(20)J220
(21)J216
Figure 8:

Entertainment Components


Object Number: 1865882  Size: LF
(1)Speaker - Left Tweeter
(2)Steering Wheel Control Switch - Right (UK3)
(3)Radio/Navigation Unit (U2K)
(4)Speaker - Right Tweeter
(5)Windshield Side Molding Garnish - Right
(6)Speaker - Right Front Door
(7)Digital Radio Antenna (U2K)
(8)Speaker - Right Rear
(9)Instrument Panel Body Harness
(10)Speaker - Subwoofer (UQ3)
(11)X401 (U2K)
(12)Digital Radio Receiver (U2K)
(13)Cellular and Navigational Antenna (U2K)
(14)Audio Amplifier (UQ3)
(15)Speaker - Left Rear
(16)Speaker - Left Front Door
(17)Steering Wheel Control Switch - Left (K34)
(18)Windshield Side Molding Garnish - Left
(19)Horn Switch
Figure 9:

Driver Door


Object Number: 1852011  Size: LF
(1)Outside Rearview Mirror - Driver (D48)
(2)Outside Rearview Mirror Connector (D48)
(3)X501
(4)X500
(5)J500
(6)J501
(7)Window Motor - Driver
(8)X505
(9)Door Lock Actuator - Driver
Figure 10:

Passenger Door


Object Number: 1851994  Size: LF
(1)Outside Rearview Mirror - Passenger (D48)
(2)Door Lock Actuator - Passenger
(3)Door Lock Switch - Passenger (AU3)
(4)Window Motor - Passenger
(5)J600
(6)Outside Rearview Mirror Connector (D48)
(7)X600
Figure 11:

Driver Seat


Object Number: 1824178  Size: LF
(1)X317
(2)Seat Belt Switch - Driver Connector
(3)Seat Belt Switch - Driver
(4)Seat Adjuster Switch - Driver (AF2)
(5)Seat Front Vertical Motor - Driver (AF2)
(6)J302
Figure 12:

Rear Chassis Harness


Object Number: 1583567  Size: LF
(1)J405
(2)X405
(3)Tail/Stop Lamp - Left
(4)Fuel Tank
(5)Fuel Pump and Sender Assembly
(6)Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(7)J402
(8)J401
(9)G400
(10)G402
(11)X406
(12)X408
(13)X409
(14)X407
(15)Tail/Stop Lamp - Right
Figure 13:

Instrument Panel Body Harness Splices - Rear Compartment Area


Object Number: 1851951  Size: LF
(1)J415
(2)J403
(3)J300
(4)J311
(5)J318
(6)X316
(7)J303
(8)J304
Figure 14:

Rear Fascia Harness Routing


Object Number: 1852089  Size: LF
(1)Center High Mounted Stop Lamp (CHMSL)
(2)Backup Lamp
(3)Fog Lamp - Rear (T79)
(4)X400
(5)J421
(6)J410