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

Power, Ground, and Serial Data


Object Number: 1905720  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Gages
Module Power, Ground, Serial Data, and MIL
Module Power, Ground, Serial Data, and MIL
G400 - 3 of 8
Fuse Block 1: Fuses 6 and 7, Fuse Block 2: Fuse 8, and Fuse Block I/P 2: Circuit Breakers 17, 18, 20, 21, 22, and 24
Fuse Block 1: Fuses 6 and 7, Fuse Block 2: Fuse 8, and Fuse Block I/P 2: Circuit Breakers 17, 18, 20, 21, 22, and 24
Brake Warning Indicators
Brake Controls, Park Brake Switch
Fuse Block I/P 1: Circuit Breaker 6
Fuse Block I/P 1: Circuit Breaker 6
Fuse Block I/P 1: Circuit Breaker 6
Controller Area Network (CAN) Connector and Data Link Connector (DLC)
Fuse Block 1: Fuse 2 and Fuse Block I/P 1: Circuit Breakers 4, 7, and 8
Fuse Block 1: Fuse 2 and Fuse Block I/P 1: Circuit Breakers 4, 7, and 8
G402 and G400 - 8 of 8
Fuse Block I/P 1: Circuit Breakers 2 and 3
Fuse Block I/P 1: Circuit Breakers 2 and 3
Figure 2:

Gages


Object Number: 1905721  Size: FS
Master Electrical Component List
Instrument Cluster Description and Operation
Control Module References
Indicators and Illumination
Power, Ground, and Serial Data
DPF Sensor, Exhaust Temperature Sensors, Exhaust Brake/Throttle Solenoid
Figure 3:

Indicators and Illumination


Object Number: 1905722  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Control Module References
Driver Information Center (DIC)
Gages
Brake Warning Indicators
I/P Dimmer Switch and Splice J321
Turn Signal/Hazard Lamps Left
Turn Signal/Hazard Lamps Right
Headlights/Daytime Running Lights 2 of 2
G402 and G400 - 8 of 8
Headlights/Daytime Running Lights 2 of 2
Figure 4:

Driver Information Center (DIC)


Object Number: 1905723  Size: FS
Master Electrical Component List
Indicator/Warning Message Description and Operation
Control Module References
Indicators and Illumination
Fuse Block I/P 1: Circuit Breaker 6
Fuse Block I/P 1: Circuit Breaker 6
Fuse Block I/P 1: Circuit Breaker 6
G100, G101, G102, G107, G114, G208, G209, G210, G214, G501, G502, G601, G602 and G400 - 1 of 8,
Module Power, Ground, Serial Data, Indicators, and Control
Power, Ground, Serial Data, MIL, Solenoids, Temperature Sensor, and Switches
Charging
Module Power, Ground, Serial Data, and MIL
Power, Ground, Serial Data, MIL, Solenoids, Temperature and Speed Sensors and Switches
Module Power, Ground, Serial Data, Indicators, and Control
Brake Controls, Park Brake Switch
Differential Lock Schematics
Exhaust System Schematics
G400 - 7 of 8