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

Forward Lamp Harness


Object Number: 1817619  Size: LF
(1)X109
(2)X110
(3)X108
(4)G101
(5)X101
Figure 2:

Body Harness - Engine Compartment


Object Number: 1817585  Size: LF
(1)X102
(2)X101
Figure 3:

Battery Cable Harness


Object Number: 1776509  Size: LF
(1)X102
(2)Battery Current Sensor
(3)G103
Figure 4:

Engine Harness - Front


Object Number: 1817625  Size: LF
(1)J110
(2)J109
(3)J108
(4)J107
(5)J105
(6)J100
(7)G107
(8)X106
Figure 5:

Engine Harness - Top of Engine


Object Number: 1817635  Size: LF
(1)J115
(2)J114
(3)J106
Figure 6:

Fuel Injector and Transmission Harness


Object Number: 1817650  Size: LF
(1)X105
(2)J104
(3)J101
Figure 7:

Instrument Panel Harness


Object Number: 1817612  Size: LF
(1)J210
(2)J213
(3)X275
(4)X276
(5)J201
(6)J212
(7)X216
(8)J223
(9)X214
(10)J211 (UUC)
(11)G203
(12)X203 (C69 without UUC)
(13)X307 (C69)
(14)X218
(15)G201
(16)X219
(17)X206
(18)X226
(19)X207 (UUC without C69)
(20)X204
(21)JX200
Figure 8:

Console Harness


Object Number: 1817594  Size: LF
(1)J301
(2)J300
(3)X202 (UUC with C69)
(4)X305
Figure 9:

Body Harness - Passenger Compartment


Object Number: 1817587  Size: LF
(1)X219
(2)X600
(3)X206
(4)X218
(5)J202
(6)J306
(7)J307
(8)X309
(9)G311
(10)X800
(11)X700
(12)X308
(13)G301
(14)X305
(15)J304
(16)J302
(17)J204
(18)X204
(19)J206
(20)X210
(21)J200
(22)X500
(23)G205
Figure 10:

Headliner and Sunroof Harness


Object Number: 1817592  Size: LF
(1)X415
(2)X412 (UUC)
(3)X417 (U3U)
Figure 11:

Body Harness - Rear Compartment


Object Number: 1817590  Size: LF
(1)G403
(2)J409
(3)X415
(4)X417 (U3U)
(5)X409 (V92)
(6)X404
(7)X901
(8)X900
(9)X403
(10)G401
(11)X419 (C69)
Figure 12:

Liftgate Harness


Object Number: 1817581  Size: LF
(1)X900
(2)X901
(3)J902
(4)X906
(5)J908
(6)Rear Window Wiper Motor Connector