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

Engine Harness Grounds Utility


Object Number: 2077107  Size: LF
(1)G103 (Except HP2)
(2)G102
Figure 2:

Engine Harness Grounds Utility (HP2)


Object Number: 2077140  Size: LF
(1)G102
(2)G103
Figure 3:

Instrument Panel Harness Underhood Ground (X88/Z88/Z75)


Object Number: 2077146  Size: LF
(1)G110
Figure 4:

Instrument Panel Harness Passenger Compartment (X88/Z88/Z75)(HP2)


Object Number: 2077152  Size: LF
(1)G201
Figure 5:

HVAC Grounds


Object Number: 2077160  Size: LF
(1)G200
Figure 6:

Chassis Component Grounds (Utility)


Object Number: 2077168  Size: LF
(1)G400
(2)G305 (EXP or HP2)
(3)G300
Figure 7:

Body Harness Ground Views (Utility)(E52)


Object Number: 2077171  Size: LF
(1)G302
(2)G304
(3)G402
(4)G303
Figure 8:

Body Harness Passenger Compartment (Without E52)


Object Number: 2077176  Size: LF
(1)G301
(2)G303
(3)G302
(4)G304
Figure 9:

Chassis (HP2)


Object Number: 2101647  Size: LF
(1)G300
(2)G400
(3)G401
(4)G305
Figure 10:

Body Harness - Passenger Compartment (Long Wheel Base)


Object Number: 2098073  Size: LF
(1)G304
(2)G402
(3)G303
(4)G302
(5)G301