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

Starting System


Object Number: 1749101  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Charging System
G104, G105, and G107
B+ BUS - Underhood Fuse Block - 2 of 2
B+ BUS - Underhood Fuse Block - 2 of 2
BCK/UP, BTSI, IGN E, and TRLR BCK/UP Fuses
Ignition Switch - ACCY/RUN/START, RUN, START Bus Bars, and IGNA1 Fuse
G104, G105, and G107
B+ BUS - Underhood Fuse Block - 1 of 2
Figure 2:

Charging System


Object Number: 1749102  Size: FS
Master Electrical Component List
Charging System Description and Operation
Control Module References
Starting System
SP205
B+ BUS - Underhood Fuse Block - 1 of 2
B+ BUS - Underhood Fuse Block - 1 of 2
SP205
G108