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

Power, Ground, A/T Shift Lock Control, Audible Warnings, DLC, Engine Controls, RAP, Starting and Charging References


Object Number: 1645631  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
ABS, Body Rear End, Brake Warning System, Defogger, Driver Seat, Horns, Keyless Entry, Passenger Seat, Theft Deterrent and Wiper/Washer System References
Fuse Block - Underhood BATT MAIN 1 Fuse, Fuse Block - I/P PK LAMPS, DISPLAYS, CHMSL/BKUP, INT LIGHT, RFA/MOD, RADIO/AMP, ONSTAR/ALDL, HVAC, and CANISTER Fuses and PK LP Relay
Fuse Block - Underhood BATT MAIN 2 Fuse, Fuse Block - I/P HTD SEAT, PWR MIRS, TURN/HAZ, DR LK/TRUNK, PRKSW, and SUN ROOF Fuses, PWR SEAT and PWR WDO Circuit Breakers, and RAP Relay
Fuse Block - Underhood B+ Bus
Retained Accessory Power (RAP) Schematics
Data Link Connector (DLC) Schematics LY7
Data Link Connector (DLC) Schematics L26
Ignition Switch
Module Power, Ground, Serial Data, and MIL
Module Power, Ground, Serial Data, and MIL
L26
LY7
Audible Warnings Schematics
Data Link Connector (DLC) Schematics L26
Data Link Connector (DLC) Schematics LY7
Charging
G201
G200
G301
Figure 2:

ABS, Body Rear End, Brake Warning System, Defogger, Driver Seat, Horns, Keyless Entry, Passenger Seat, Theft Deterrent and Wiper/Washer System References


Object Number: 1645632  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Door/Lock Indicator, Fog Lights, Headlights/DRL, Interior Lights, OnStar and Rear Parking Assist References
Power, Ground, A/T Shift Lock Control, Audible Warnings, DLC, Engine Controls, RAP, Starting and Charging References
Content Theft Deterrent (CTD) System
Vehicle Theft Deterrent (VTD) System
Keyless Entry Schematics
Body Rear End Schematics
Horns Schematics
Data Active Brake and Stability
Brake Warning System Schematics
Defogger Schematics
Heat Controls
Heat Controls
Wiper/Washer System Schematics
Figure 3:

Door/Lock Indicator, Fog Lights, Headlights/DRL, Interior Lights, OnStar and Rear Parking Assist References


Object Number: 1645633  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Exterior Lights and Interior Lights References
ABS, Body Rear End, Brake Warning System, Defogger, Driver Seat, Horns, Keyless Entry, Passenger Seat, Theft Deterrent and Wiper/Washer System References
Ajar Indicators
Switches
Actuators
Headlights/Daytime Runing Lights (DRL) Schematics
VCIM to Inside Rearview Mirrors
Fog Lights Schematics
I/P, Console, and Driver Door Lighting
Object Detection Schematics
Exterior Lights and Interior Lights References
Figure 4:

Exterior Lights and Interior Lights References


Object Number: 1645635  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Control Module References
Door/Lock Indicator, Fog Lights, Headlights/DRL, Interior Lights, OnStar and Rear Parking Assist References
Park Lamps
Turn Signal, Hazard and Stop Lamps Inputs
Turn Signal, Hazard and Stop Lamps Outputs
Shift and TCC Solenoid Valves, TFT Sensor, and Stop Lamp Switch (LY7)
L26
Data Active Brake and Stability
Cruise Control Schematics L26
Turn Signal, Hazard and Stop Lamps Inputs
Door/Lock Indicator, Fog Lights, Headlights/DRL, Interior Lights, OnStar and Rear Parking Assist References
Turn Signal, Hazard and Stop Lamps Inputs
Backup and License Lamps
Lamp Controls
Courtesy Lamps