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

Power, Ground, and Serial Data Circuits


Object Number: 1195937  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Power Windows and Door Locks, HVAC, and Tow/Haul Controls
PCM B, TREC, IPC/DIC, TBC BATT, SEO B1, SEO B2, and HVAC/ECAS Fuses
B/U LP, O2A, O2B, TBC IGN 1, TRL B/U, and BTSI Fuses
LBEC 1, LBEC 2, INFO, FPDM, AUX PWR, DDM, LOCKS, TBC 2A, 2B, and 2C, and LT DOORS Circuit Breaker
WS WPR, SEO ACCY, RR WPR, TBC ACCY, TBC IGN 0, and IGN 0 Fuses
WS WPR, SEO ACCY, RR WPR, TBC ACCY, TBC IGN 0, and IGN 0 Fuses
Power, Ground, DLC, and Splice Pack SP205
G200
G200
Figure 2:

Power Windows and Door Locks, HVAC, and Tow/Haul Controls


Object Number: 1195948  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Interior Lights, Horns, Entertainment, and Theft Deterrent
Power, Ground, and Serial Data Circuits
Door Lock/Indicator Schematics
Defogger Schematics
Rear Door Windows
Temperature Controls and Sunload Sensors
Rear Door Windows
Power, BCM, PCM, Class 2, Stop Lamp Switch, Tow/Haul Switch, and Shift Solenoids
Door Lock/Indicator Schematics
Figure 3:

Interior Lights, Horns, Entertainment, and Theft Deterrent


Object Number: 1195949  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Headlamps, Park Lamps, and DRL Controls, and Park Brake Signal
Power Windows and Door Locks, HVAC, and Tow/Haul Controls
04 H2 Horns Schematics
Vehicle Theft Deterrent
Interior Lights Controls, BCM, Door Ajar Switches
Courtesy Lamps - Headliner Front, Center, and Rear
Courtesy Lamps - Footwells, Rear Doors, and B-Pillars
Interior Lights Controls, BCM, Door Ajar Switches
Audible Warnings Schematics
Power, Ground, DLC, and Steering Wheel Controls
Figure 4:

Headlamps, Park Lamps, and DRL Controls, and Park Brake Signal


Object Number: 1195953  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Interior Lights Dimming, Backup Lights, and Sunroof Power
Interior Lights, Horns, Entertainment, and Theft Deterrent
Headlamp Controls, Switches, and Ambient Light Sensor
Headlights /Daytime Running Lights (DRL) Schematics
Dimmer Controls, I/P Cluster Illumination, and Switch Indicators
Park Lamp Relay, Front Park and Marker Lamps
Headlights /Daytime Running Lights (DRL) Schematics
Headlamp Controls, Switches, and Ambient Light Sensor
Figure 5:

Interior Lights Dimming, Backup Lights, and Sunroof Power


Object Number: 1195954  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Headlamps, Park Lamps, and DRL Controls, and Park Brake Signal
Dimmer Controls, I/P Cluster Illumination, and Switch Indicators
Backup Lamps
Power Sunroof Schematics
Brake Warning System Schematics
Backup Lamps
Dimmer Controls, I/P Cluster Illumination, and Switch Indicators