GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Pontiac
🢒
2003
🢒
Grand Prix
🢒
Body and Accessories
🢒
Body Control System
🢒 Radio/Audio System Schematics
Figure
1:
Power and Ground
Master Electrical Component List
Radio/Audio System Description and Operation
Radio to Speakers (w/o U85)
IGN MAIN 2, RADIO, SUNROOF, STR WHL CTRL, WIPER, MALL, MALL PGM Fuses, and PWR WDO Circuit Breaker
BATT MAIN 2, R DEFOG, H SEAT/LUM, PWR LOCK, RADIO AMP Fuses and SEAT Circuit Breaker
IGN MAIN 2, RADIO, SUNROOF, STR WHL CTRL, WIPER, MALL, MALL PGM Fuses, and PWR WDO Circuit Breaker
Steering Wheel Controls
DLC
Vehicle Interface Unit (VIU) to On-Star Keypad and Radio
Headlamp Switch and Instrument Panel Lighting
G201
Figure
2:
Radio to Speakers (w/o U85)
Master Electrical Component List
Radio/Audio System Description and Operation
Radio to Amplifier (w/U85)
Power and Ground
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure
3:
Radio to Amplifier (U85)
Master Electrical Component List
Radio/Audio System Description and Operation
Amplifier to Speakers (w/U85)
Radio to Speakers (w/o U85)
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Entertainment Schematic Icons
Figure
4:
Amplifier to Speakers (U85)
Master Electrical Component List
Radio/Audio System Description and Operation
Radio to Amplifier (w/U85)
Entertainment Schematic Icons
Entertainment Schematic Icons