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

Starting System


Object Number: 1404651  Size: FS
Master Electrical Component List
Starting System Description and Operation
Engine Electrical - Charging System
ACCY/RUN and RUN/START Bus Bar
IGN E, TBC IGN 1, BCK/UP and BTSI
B+ Bus - Fuse Block Underhood
B+ Bus - Fuse Block Underhood
Figure 2:

Charging System


Object Number: 1177909  Size: FS
Master Electrical Component List
Starting System Description and Operation
Engine Electrical - Starting System
B+ Bus - Fuse Block Underhood
Data Link Connector