GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Century 🢒 Engine 🢒 Engine Electrical 🢒 Starting and Charging Schematics
Figure 1:

Starting
Object Number: 1354489 Size: FS
Master Electrical Component List
Starting System Description and Operation
Charging
Fuse Block - Underhood B+ Bus
Fuse Block - I/P TRN/SIG, AIR BAG, CLSTR, and PCM, BCM U/H Fuses, Fuse Block - Underhood CRANK and IGN MAIN Relays
Fuse Block - Underhood B+ Bus
Fuse Block - Underhood IGN 1 Fuse
Fuse Block - Underhood IGN 1 Fuse
Fuse Block - Underhood IGN 1 Fuse
Fuse Block - Underhood B+ Bus
G100, G113, and G171
Figure 2:

Charging
Object Number: 835355 Size: FS
Master Electrical Component List
Charging System Description and Operation
Starting
Fuse Block - Underhood B+ Bus
Fuse Block - Underhood B+ Bus
Data Link Connector (DLC) Schematics
G100, G113, and G171