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

Starting Controls


Object Number: 686753  Size: FS
Master Electrical Component List
G303, G305, G310, and G404
Battery Feed to the Fuse Block - Underhood
INJR 2, PCM IGN, CR CONT, INJR 1 Fuses and the START 1 Relay( Fuse Block - Underhood)
INJR 2, PCM IGN, CR CONT, INJR 1 Fuses and the START 1 Relay( Fuse Block - Underhood)
Ignition Switch Positions
Generator Controls
Class 2 Serial Data
Figure 2:

Generator Controls


Object Number: 686754  Size: FS
Master Electrical Component List
Class 2 Serial Data
Class 2 Serial Data
Battery Voltage to the Rear Fuse Block
Indicators
Starting Controls
Figure 3:

Indicators


Object Number: 686755  Size: FS
Master Electrical Component List
Class 2 Serial Data
Generator Controls