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

Connector X104, Engine Control Module (ECM) PTO Relay, Turn Signal Multifunction and PTO Switches


Object Number: 1905691  Size: FS
Master Electrical Component List
Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)
Control Module References
Connectors, X409, X410, X209 and Engine Control Module (ECM)
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
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
G400 - 3 of 8
Fuse Block 1: Fuse 5 and Fuse Block I/P 1: Circuit Breakers 5, 9 - 1 of 2, and 10
Fuse Block 1: Fuse 5 and Fuse Block I/P 1: Circuit Breakers 5, 9 - 1 of 2, and 10
Cruise Control Schematics
Power, Ground, Serial Data, MIL, Solenoids, Temperature and Speed Sensors and Switches
Power, Ground, Serial Data, MIL, Solenoids, Temperature Sensor, and Switches
G400 - 2 of 8
Figure 2:

Connectors X410, X410, X209, and Engine Control Module (ECM)


Object Number: 1905694  Size: FS
Master Electrical Component List
Power Steering System Description and Operation (w/o Electro-Hydraulic Steering)
Control Module References
Connector X104, Engine Control Module (ECM) PTO Relay, Turn Signal Multifunction and PTO Switches
G400 - 6 of 8
G402 and G400 - 8 of 8