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

Starting System


Object Number: 864654  Size: FS
Master Electrical Component List
Starting System Description and Operation
AUX PWR 2, RRHVAC, AUX PWR 1, TBC 2, TBC 3, TBC 4 Fuses
COILS, ECAS, CANISTER, WASH, IPC/DIC, FLASHER, TBC 1 Fuses
COILS, ECAS, CANISTER, WASH, IPC/DIC, FLASHER, TBC 1 Fuses
I/P BATT, TRAILER ABS, HORN IGN A, IGN B, ATC Fuses
Figure 2:

Charging System


Object Number: 864657  Size: FS
Master Electrical Component List
Charging System Description and Operation
Data Link Connector
I/P BATT, TRAILER ABS, HORN IGN A, IGN B, ATC Fuses