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

Except Z75


Object Number: 744984  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
w/ Z75
O2 B, O2 A, ENG 1, and IGN E Fuses
B+ Bus Bar
G100 and G110
G100 and G110
Figure 2:

w/Z75


Object Number: 815237  Size: FS
Master Electrical Component List
Exterior Lighting Systems Description and Operation
Except Z75
O2 B, O2 A, ENG 1, and IGN E Fuses
B+ Bus Bar
G100 and G110
G100 and G110