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

Power, Ground, and Serial Data


Object Number: 1740517  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Power Moding and Interior Light References
B+ Bus - 1 of 3
AUX PWR, AUX PWR 2, LBEC 1, PDM, and REAR WPR Fuses
BCM, COOLED SEATS, CTSY, DDM, DIM, DSM, LBEC 2, MBEC 1, REAR HVAC, and RT STOP TRN Fuses and DRIVER SEAT 2, PASS SEAT 1, and RT DOORS Circuit Breakers
ECM-BATT, HEADLAMP WASH, HVAC BATT, IPC, LTR, S/ROOF, and TCM-BATT Fuses
G201
G201
G103, G110, and G111
Low Speed Bus - SP 200 - 2 of 3
High Speed Bus - 1 of 2
High Speed Bus - 1 of 2
Module Power, Ground, and Serial Data, Pump Motor and Brake Switch - JD9 Under 8600 GVW
Module Power, Ground, and Serial Data
Figure 2:

Power Moding and Interior Light References


Object Number: 1740519  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Exterior Light References
Module Power, Ground, and Serial Data
Ignition 3 and Accessory Voltage
Ignition 3 and Accessory Voltage
Ignition 3 and Accessory Voltage
Ignition 3 and Accessory Voltage
Ignition 3 and Accessory Voltage
Ignition 1 Voltage
Courtesy Lamp Control
LED Dimming - 3 of 3
Dimming Control and LED Dimming - 1 of 3
Dimming Control and LED Dimming - 1 of 3
Door Jamb Switches
Inadvertent Lamp Control
I/P Bulb Dimming
Dimming Control and LED Dimming - 1 of 3
Inadvertent Lamp Control
Door Jamb Switches
Figure 3:

Exterior Light References


Object Number: 1740521  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Vehicle Access and Wiper References
Power Moding and Interior Light References
Headlamp and Daytime Running Lamp Controls
Low Beam and Daytime Running Lamps - X88/Z88
High Beams
Park Lamp Controls and Front Park Lamps
Backup Lamps
Turn Signal Lamp Power and Control
Stop Lamps - Domestic Z75
Trailer Lighting Control - Export 1 of 2 and all Domestic
Front
Stop Lamp Controls and CHMSL
Front Turn Signal Lamps
Stop Lamp Controls and CHMSL
Figure 4:

Vehicle Access and Wiper References


Object Number: 1740523  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Brake, Horn, Transmission, Theft, and Secondary/Configurable Control References
Exterior Light References
Liftglass - E52
Liftglass - E52
Rear
Outside Moisture Sensor
Left
Right
Front
Front
Figure 5:

Brake, Horn, Transmission, Theft, and Secondary Configurable Control References


Object Number: 1740524  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Vehicle Access and Wiper References
Module Power, Ground, and Serial Data, Pump Motor and Brake Switch - JD9 Under 8600 GVW
Brake Warning System Schematics
Horn Schematics
Charge
Transmission Range Signals and Driver Shift Request
PNP Signals, VSS Signal, and Tow/Haul Signal
PNP Signals, Speed Signals, and Tow/Haul Signal
Transmission Range Signals and Driver Shift Request
Shiftlock Control Schematics
Except AN3
Folding Seat Controls - ARS
Steering Wheel Controls
Vehicle Theft Deterrent
SPO Alarm