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

Power, Grounds, and Communication


Object Number: 1504253  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Controls
IGN BATT 1, IGN SW BATT 2, Ignition Switch
LH BFC BATT 2, STOP LPS, HAZARD LPS, IPC/HVAC BATT Fuses
RR DEFOG, HORN, HI BLO MOT, RH BEC BATT, COOL FANS, and ABS Fuses
CRUISE SW, CRUISE, SUNROOF, and HVAC BLOWER Fuses
IGN MOD, B/U LMP, PCM IGN, INJR, A/C FBC, AUTO TRANS, ABS IGN Fuses
Fog Lights Schematics
Headlights
Power, Grounds, and Park Lamp Relay
SP202
Data Link Connector (DLC) Schematics
Power and Dome Lamps
Instrument Panel and Rear Compartment Lamps
Data Link Connector (DLC) Schematics
Power, Grounds, and Park Lamp Relay
Turn Signal and Hazard Switch
Figure 2:

Controls


Object Number: 782689  Size: FS
Master Electrical Component List
Body Control System Description and Operation
Power, Ground and Communication
Door Ajar Lamps
Actuators w/ Remote Function Actuation
Switches
Horns Schematics
Body Rear End Schematics
DRL and ALC Relay
Theft Deterrent System Schematics
Low Coolant Indicator
Wiper Washer
Ignition Switch, Seat Belt, and Door Ajar Inputs
Seat Belts Schematics
Brake Warning System Schematics
Driver Controls