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

Brake Pressure Modulator Valve


Object Number: 674840  Size: FS
Master Electrical Component List
ABS Description and Operation
Brake Control Module (EBCM), ABS Indicator, Accelerometer
BATT, ABS, F1, and ACC Fuses
G200 (1 of 2)
CIG, DEF, P/W Fuses
CIG, DEF, P/W Fuses
Figure 2:

ABS Indicator, Accelerometer, and Idle Up Signal


Object Number: 674845  Size: FS
Master Electrical Component List
ABS Description and Operation
Electronic Brake Control Module (EBCM), Brake Indicator, 4WD Indicator, Stoplamp Switch, Brake Fluid Level Switch
Electronic Brake Control Module (EBCM) Power and Ground
IG Fuse
IG Fuse
TURN, WIP Fuses
ABS Indicator, Brake Indicator, Air Bag Indicator
G200 (1 of 2)
G200 (1 of 2)
Figure 3:

Brake Fluid Level Indicator, Brake Indicator and Stop Lamp Switch


Object Number: 674850  Size: FS
Master Electrical Component List
ABS Description and Operation
Electronic Brake Control Module (EBCM), Wheel Speed Sensors
Brake Control Module (EBCM), ABS Indicator, Accelerometer
HAZ, D/L, TAIL, STOP, DOME Fuses
Stop Lamp Switch, Stoplamps
HAZ, D/L, TAIL, STOP, DOME Fuses
IG Fuse
Brake Warning Schematics
Power, O/D OFF, 4WD, MIL, CRUISE, Charge Indicators
G104
Figure 4:

Wheel Speed Sensors


Object Number: 674864  Size: FS
Master Electrical Component List
ABS Description and Operation
Electronic Brake Control Module (EBCM), Brake Indicator, 4WD Indicator, Stoplamp Switch, Brake Fluid Level Switch