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

Starting System


Object Number: 1250955  Size: FS
Master Electrical Component List
Starting System Description and Operation
Charging System
ACCY/RUN and RUN/START Bus Bars
B+ Bus - Underhood Fuse Block
IGN E, TBC IGN 1, BACKUP, BTSI, and TRLR B/U Fuses
ACCY/RUN/START, RUN, and START Bus Bars
B+ Bus - Underhood Fuse Block
Figure 2:

Charging System


Object Number: 1250960  Size: FS
Master Electrical Component List
Charging System Description and Operation
Starting System
Power, Ground, Data Link Connector, and SP205
B+ Bus - Underhood Fuse Block