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

Battery, Starter and Ignition Switch, Inputs and Outputs
Object Number: 1957126 Size: FS
Master Electrical Component List
Charging System Description and Operation
Control Module References
Battery Current Sensor and Generator, Inputs and Outputs
G401 and G409
G101 and G102
G103, G106, G107, G108 and G109 (3.6L)
G103, G106, G107, G108 and G109 (3.6L)
G201 - 1 of 2
B+ Bus - 1 of 2
B+ Bus - 1 of 2
Batt Main 4, BCM Logic, Console Lighting, IGNSW/Theft and Stop Lamps/Park Assist Fuses and Ignition Switch
Figure 2:

Battery Current Sensor and Generator, Inputs and Outputs
Object Number: 1957132 Size: FS
Master Electrical Component List
Charging System Description and Operation
Control Module References
Battery, Starter and Ignition Switch, Inputs and Outputs
G401 and G409
B+ Bus - 1 of 2
B+ Bus - 1 of 2
B+ Bus - 1 of 2