GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2003 🢒 Grand Prix 🢒 Body and Accessories 🢒 Body Control System 🢒 Body Control System Schematics
Figure 1:

Power, Ground, and References
Object Number: 874061 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Lighting, Door Locks, and Horn References
BATT MAIN 1, ONSTAR, STOPLAMP, INT LAMP, and CIG LTR Fuses
BATT MAIN 2, R DEFOG, H SEAT/LUM, PWR LOCK, RADIO AMP Fuses and SEAT Circuit Breaker
IP-IGN, CRUISE, and ECM Fuses
IP-IGN, CRUISE, and ECM Fuses
IGN MAIN 2, RADIO, SUNROOF, STR WHL CTRL, WIPER, MALL, MALL PGM Fuses, and PWR WDO Circuit Breaker
Keyless Entry
Body Control Module
G200, S211, S285
G200, G213, S375
Retained Accessory Power
Gages
Audible Warning
Body Rear End
Seat Belts
Figure 2:

Lighting, Door Locks, and Horn References
Object Number: 874062 Size: FS
Master Electrical Component List
Body Control System Description and Operation
Power, Ground, and References
Dattime Running Lamps (DRL) Control Module Inputs
Audible Warning
Switches
Instrument Panel and Rear Compartment Lamps
Door Lock Actuators
Door Lock Switches
Horns