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

Starting - L26


Object Number: 1801692  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Starting - LY7
G101, G102, G103, G111, G112, and G113
Fuse Block-Underhood B+ Bus
Ignition Switch
Data Link Connector Schematics L26
Fuse Block - Underhood ABS, TRANS SOL, PCM, SIR, and DIPSLAY Fuses, CRANK Relay, and Fuse Block - I/P CRUISE SW Fuse
Turn Signal, Hazard and Stop Lamps Inputs
G101, G102, G103, G111, G112, and G113
Fuse Block-Underhood B+ Bus
G101, G102, G103, G111, G112, and G113
G101, G102, G103, G111, G112, and G113
Figure 2:

Starting - LY7


Object Number: 1801737  Size: FS
Master Electrical Component List
Starting System Description and Operation
Control Module References
Charging
Starting - L26
G115 (LY7)
Fuse Block-Underhood B+ Bus
Ignition Switch
Data Link Connector (DLC) Schematics LY7
Fuse Block - Underhood ABS, TRANS SOL, PCM, SIR, and DIPSLAY Fuses, CRANK Relay, and Fuse Block - I/P CRUISE SW Fuse
Turn Signal, Hazard and Stop Lamps Inputs
G101, G102, G103, G111, G112, and G113
Fuse Block-Underhood B+ Bus
G101, G102, G103, G111, G112, and G113
G115 (LY7)
Figure 3:

Charging


Object Number: 1801758  Size: FS
Master Electrical Component List
Charging System Description and Operation
Control Module References
Starting - LY7
I/P, Console, and Driver Door Lighting
Fuse Block-Underhood B+ Bus
Data Link Connector Schematics L26
Data Link Connector (DLC) Schematics LY7