GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Savana 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Antilock Brake System Schematics
Figure 1:

Power, Ground, Serial Data, Indicator, and Stop Lamp Switch (w/o JL4)
Object Number: 1753757 Size: FS
Master Electrical Component List
ABS Description and Operation (W/O JL4)
Control Module References
Wheel Speed Sensors and VSS - w/o JL4
Ignition Switch - ACCY/RUN/START, RUN, START Bus Bars and IGN A Fuse
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
B+ Bus - Underhood Fuse Block - Gas
AIRBAG, FAN CLTCH, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
BRK, CRNK, FRT WPR, HVAC, ING 0, TBC ACCY and TBC/TCM ACCY Fuses
Power, Ground, DLC and Splice Pack SP200
Controlled/Monitored Subsystem and Transmission References
Fuel Controls - EVAP and Device Controls
Controlled/Monitored Subsystem References
Controlled/Monitored Subsystem References
4.3L
Figure 2:

Wheel Speed Sensors and VSS (w/o JL4)
Object Number: 1753758 Size: FS
Master Electrical Component List
ABS Description and Operation (W/O JL4)
Control Module References
Power, Ground, Serial Data, Indicator, VSS and Stop Lamp Switch - JL4
Power, Ground, Serial Data, Indicator and Stop Lamp Switch - w/o JL4
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Figure 3:

Power, Ground, Serial Data, Indicator, and Stop Lamp Switch (JL4)
Object Number: 1753763 Size: FS
Master Electrical Component List
ABS Description and Operation (W/JL4)
Control Module References
Wheel Speed Sensors - JL4
Wheel Speed Sensors and VSS - w/o JL4
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
AIRBAG, FAN CLTCH, IGN E, ISRVM, SPARE and TBC IGN 1 Fuses
Steering Wheel/Speed Position Inputs, Traction Control Switch and Precharge Pump - JL4
Ignition Switch - ACCY/RUN/START, RUN, START Bus Bars and IGN A Fuse
B+ Bus - Body Fuse Block
AUX 1, OSRVM, REAR BLWR and SPARE Fuses
ABS/VSES, FOH/ECM/TCM BATT, PCM BATT, and TRLR Fues
Power, Ground, DLC and Splice Pack SP200
Figure 4:

Wheel Speed Sensors and VSS (JL4)
Object Number: 1753764 Size: FS
Master Electrical Component List
ABS Description and Operation (W/JL4)
Control Module References
Yaw and Lateral Acceleration Sensor Inputs - JL4
Power, Ground, Serial Data, Indicator, VSS and Stop Lamp Switch - JL4
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Antilock Brake System Schematic Icons
Figure 5:

Yaw and Lateral Acceleration Sensor Inputs (JL4)
Object Number: 1753767 Size: FS
Master Electrical Component List
ABS Description and Operation (W/JL4)
Control Module References
Steering Wheel/Speed Position Inputs, Traction Control Switch and Precharge Pump - JL4
Wheel Speed Sensors - JL4
Figure 6:

Steering Wheel/Speed Position Inputs, Traction Control Switch, and Precharge Pump (JL4)
Object Number: 1753768 Size: FS
Master Electrical Component List
ABS Description and Operation (W/JL4)
Control Module References
Yaw and Lateral Acceleration Sensor Inputs - JL4
Ignition Switch - ACCY/RUN, RUN/START Bus Bars and IGN B Fuse
BTSI, BTSI BCK/UP, ECM/TCM/GLOW PLUG CNTRL MDL IGN 1, FUEL HTR, O2 SNSR A, O2 SNSR B, PCM IGN 1, SPARE and TRLR BCK/UP Fuses
BTSI, BTSI BCK/UP, ECM/TCM/GLOW PLUG CNTRL MDL IGN 1, FUEL HTR, O2 SNSR A, O2 SNSR B, PCM IGN 1, SPARE and TRLR BCK/UP Fuses
Power, Ground, Serial Data, Indicator, VSS and Stop Lamp Switch - JL4
I/P Dimming Supply Voltage - 1 of 3 and LED Dimming Supply Voltage
G303
G304