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

ABS Relay, DIC and EBCM


Object Number: 1839929  Size: FS
Master Electrical Component List
Air ABS Description and Operation
Control Module References
Stop Lamp Switch
Ignition Switch - OFF/RUN/START, RUN/START, and START Busses
2007 MD-560C Driver Information System Schematics - DIC
AIRBAG, GAUGES, LT REAR TURN/STOP, and RT REAR TURN/STOP Fuses/Circuit Breakers
G101 - 2 of 2
Ignition Switch - RUN and ACC/RUN Busses
AXL/4WD, BRK, HYD/AIR BRK, and HTR/AC Fuses/Circuit Breakers
AXL/4WD, BRK, HYD/AIR BRK, and HTR/AC Fuses/Circuit Breakers
G100 - L18
Data Link Connector Power and Ground
G103 - 2 of 2
Batteries - LG4/LG5 and B+ Bus
J1939 Serial Data, 2 of 2 - L18 w/JE4, LG4, LG5
Figure 2:

Stop Lamp Switch


Object Number: 1839940  Size: FS
Master Electrical Component List
Air ABS Description and Operation
Control Module References
BPMV and WSS
ABS Relay, DIC and EBCM
Ignition Switch - RUN and ACC/RUN Busses
AXL/4WD, BRK, HYD/AIR BRK, and HTR/AC Fuses/Circuit Breakers
Ground
Figure 3:

BPMV and WSS


Object Number: 1839946  Size: FS
Master Electrical Component List
Air ABS Description and Operation
Control Module References
BPMV
Stop Lamp Switch
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Figure 4:

BPMV


Object Number: 1839961  Size: FS
Master Electrical Component List
Air ABS Description and Operation
Control Module References
BPMV and WSS
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Air Antilock Brake System Schematic Icons
Exhaust System Schematics