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

Starting System


Object Number: 687971  Size: FS
Master Electrical Component List
Starting System Description and Operation
Ignition Switch, IGN and ST Fuses
CPP Switch, PNP Switch, and Park Brake Switch
G100, G101, G102, G103, and G104
SP 254 and SP261
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
ABS, ALT, AMI, DEF, DYL, ECU-B, HTR, OBD, POWER and STOP Fuses
Figure 2:

Charging System


Object Number: 687984  Size: FS
Master Electrical Component List
Charging System Description and Operation
Starting System
ABS, ALT, AMI, DEF, DYL, ECU-B, HTR, OBD, POWER and STOP Fuses
ABS, ALT, AMI, DEF, DYL, ECU-B, HTR, OBD, POWER and STOP Fuses
ALT-S, AM2, DOME, EFI, Hazard, Horn, and Main Fuses
Gauge Fuse
Gauge Fuse
Gauge Fuse
Gauge Fuse
DRL Control Module and Ambient Light Sensor