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

Forward Lamp Harness (Chevy)


Object Number: 2017097  Size: LF
(1)Right Front Strut Tower
(2)Fuse Block - Underhood X3 Connector
(3)X101
(4)G101
(5)Radiator
(6)X108 (LY7)
Figure 2:

Engine Harness - Front (LNJ)


Object Number: 1776750  Size: LF
(1)Front Valve Cover
(2)Engine Control Module (ECM) X2 Connector
(3)Engine Control Module (ECM) X1 Connector
(4)Fuse Block - Underhood
(5)G105
Figure 3:

Engine Harness - Rear (LNJ)


Object Number: 1776733  Size: LF
(1)Fuse Block - Underhood
(2)X106
(3)X105
(4)G111
(5)J100
Figure 4:

G107 and G105 (LY7)


Object Number: 1827813  Size: LF
(1)G107
(2)Front Cylinder Head
(3)G105
(4)Starter Motor
Figure 5:

Engine Harness - Rear (LY7)


Object Number: 1817638  Size: LF
(1)G108
(2)G109
Figure 6:

Power Steering Harness (LNJ)


Object Number: 1776531  Size: LF
(1)Power Ring Terminal
(2)G207
Figure 7:

Instrument Panel Harness - Passenger Side


Object Number: 1777007  Size: LF
(1)Instrument Panel Cluster Trim
(2)J212
(3)X214
(4)G201
(5)X206
(6)X218
(7)X216
(8)G203
(9)X226
(10)X204
(11)X210
Figure 8:

Body Harness - Passenger Compartment


Object Number: 2017347  Size: LF
(1)X206
(2)X600
(3)X219
(4)J307
(5)X309
(6)G311
(7)X800
(8)X700
(9)X308 (AG1)
(10)G301
(11)J304
(12)J308 (Chevy)
(13)J302
(14)J306
(15)J204
(16)X204
(17)J202
(18)X210
(19)X500
(20)J200
(21)G205
Figure 9:

Body Harness - Left Rear


Object Number: 1776933  Size: LF
(1)X401
(2)X405
(3)Left Rear Body Panel
(4)Left Rear Wheel Well
(5)G401
(6)X409 (V92)
(7)X420 (ASF)
Figure 10:

Body Harness - Right Rear


Object Number: 2022282  Size: LF
(1)X422 (UE1/U3U)
(2)X421 (ASF)
(3)X414
(4)X405
(5)X412 (UUC)
(6)J409
(7)G403
(8)Right Rear Wheel Well