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

Starting System-M12


Object Number: 1458538  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Engine Electrical - Starting System
Ignition Switch - ACCY/RUN and RUN/START Bus Bar and IGN B Fuse
BCK/UP REV LK OUT, BTSI, and IGN E Fuses
B+ Bus Underhood Fuse Block
Ignition Switch - ACCY/RUN/START,RUN and START Bus Bars, CRNK and IGN A Fuses
B+ Bus Underhood Fuse Block
Figure 2:

Starting System


Object Number: 1458539  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Engine Electrical - Charging System
Starting System (M12)
Ignition Switch - ACCY/RUN and RUN/START Bus Bar and IGN B Fuse
BCK/UP REV LK OUT, BTSI, and IGN E Fuses
B+ Bus Underhood Fuse Block
Ignition Switch - ACCY/RUN/START,RUN and START Bus Bars, CRNK and IGN A Fuses
B+ Bus Underhood Fuse Block
Figure 3:

Charging System


Object Number: 1458541  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Engine Electrical - Starting System
B+ Bus Underhood Fuse Block
Indicator and DIC Controls
Data Link Connector Schematics