GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2003
🢒
Impala
🢒
Body and Accessories
🢒
Body Control System
🢒 Body Control System Schematics
Figure
1:
Grounds, Power, and References to DLC and Keyless Entry
Master Electrical Component List
Body Control System Description and Operation
ABS, Audible Warnings, Body Rear End, Horns, HVAC
BATT Rundown Prot. Relay, IP BRP, and TRK/ROOF BRP Fuses
BATT Rundown Prot. Relay, IP BRP, and TRK/ROOF BRP Fuses
CLSTR/BCM, DK LK, LEFT IP, LT HTD ST/BCM, and PWR MIR
A/C Cruise, A/C Fan, CRUISE, PCM/BCM CLSTR, and PCM Fuses
A/C Cruise, A/C Fan, CRUISE, PCM/BCM CLSTR, and PCM Fuses
CLSTR/BCM, DK LK, LEFT IP, LT HTD ST/BCM, and PWR MIR
A/C RLY (CMPR), A.I.R PMP RLY, BCM, CIG/AUX, EXT LTS, IGN
ABS/PCM, SRS, STOP, and TURN SIGNAL Fuses
ABS/PCM, SRS, STOP, and TURN SIGNAL Fuses
G203 [1 of 3]
G201 [1 of 2]
Keyless Entry
DLC
Figure
2:
References to ABS, Audible Warnings, Body Rear End, Horns, HVAC, Hydralic Brakes, I/P, RAP, Shift Lock, and Theft Deterrent
Master Electrical Component List
Body Control System Description and Operation
References to Lighting
Grounds, Power, DLC, and Keyless Entry
Decklid Release (w/Entrapment Protection)
Compressor Control
Automatic Transmission Shift Lock Control
Horns
Ground, Power, and RAP Relay
Brake Warning System
Traction Control Switch
Theft Deterrent
Audible Warnings
Ground, Odometer/PRNDL, Power, and VSS
Figure
3:
References to Lighting
Master Electrical Component List
Body Control System Description and Operation
Doors, Engine Electrical, and Lighting
ABS, Audible Warnings, Body Rear End, Horns, HVAC
Park Lamps [Impala]
Backup Lamps [w/o 9C1/9C3/9C6]
I/P
Roof Lighting
Courtesy Lamps Control, and I/P
Fog Lights
Indicators, and Lamp Control
Figure
4:
References to Doors, Engine Electrical, and Lighting
Master Electrical Component List
Body Control System Description and Operation
References to Lighting
Door Lock Actuators
Door Open Switches [Left]
Lock Switches
Courtesy Lamps Control, and I/P
Load Management
