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

Starting System


Object Number: 1412984  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Charging System
Ignition Switch - ACCY/RUN and RUN/START Bus Bars, IGN B Fuse
B+ Bus - Underhood Fuse Block
BACK UP, BTSI, IGNE, TBC IGN1, and TRLR B/U Fuses
Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRANK Fuses
B+ Bus - Underhood Fuse Block
Figure 2:

Charging System


Object Number: 1412986  Size: FS
Master Electrical Component List
Charging System Description and Operation
Control Module References
Starting System
B+ Bus - Underhood Fuse Block
SP205