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

Power and Ground


Object Number: 888480  Size: FS
Master Electrical Component List
ABS Description and Operation
Class 2 Communication
B+ Bus Bar
RR WPR, FRT WPR and ABS Fuses
Brake Warning System Schematics
Brake Switch, VSS Inputs - 2.2L
Brake Switch Input (4.3L) and Tow/Haul Switch
Clutch Pedal Position Switch, Stop Lamp Switch, PCM and Cruise Control Module
Figure 2:

Class 2 Communication


Object Number: 884541  Size: FS
Master Electrical Component List
ABS Description and Operation
Speed Sensor Signals
Power and Ground
Class 2 Serial Data
Figure 3:

Speed Sensor Signals


Object Number: 884543  Size: FS
Master Electrical Component List
ABS Description and Operation
Class 2 Communication
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons