Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 199 (BODY CONTROL SYSTEM)DESCRIPTION AND OPERATIONBODY CONTROL SYSTEM DESCRIPTION AND OPERATIONBODY CONTROL MODULE
2001 Chevrolet Cavalier LS, 2.4 T
Body Control Module
2001 Chevrolet Cavalier LS, 2.4 TSECTION Body Control Module
WARNING: This page is about a different car, the 2004 Pontiac Sunfire and 2004 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
The various BCM input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. The Body Control Module functions include the following:
- Retained accessory power (RAP) audio system only. Refer to Retained Accessory Power (RAP) Description and Operation .
- A/C compressor request. Refer to Air Temperature Description and Operation .
- Remote function control. Refer to Keyless Entry System Description and Operation .
- A/C cooling fan. Refer to Air Delivery Description and Operation .
- Exterior and interior lighting control. Refer to Exterior Lighting Systems Description and Operation
.
- Daytime running lamps (DRL)
- Automatic lighting control
- Fog lamps
- Interior lighting. Refer to Interior Lighting Systems Description and Operation .
- Battery rundown protection (Inadvertent Power). Refer to Interior Lighting Systems Description and Operation .
- Chimes. Refer to Audible Warnings Description and Operation
.
- Key-In-Ignition
- Headlamps On
- Seat Belt Not Fastened
- Turn Signal On
- Park Brake Warning
- Door Ajar Warning
- Check Gages
- Gage control. Refer to Instrument Panel Cluster (IPC) Description and Operation .
- Instrument cluster indicator control. Refer to Instrument Panel Cluster (IPC) Description and Operation .
- Theft deterrent. Refer to Theft Systems Description and Operation .
- Engine coolant level sensing. Refer to Cooling System Description and Operation .
- Key-in-ignition sensing. Refer to Audible Warnings Description and Operation .
- Brake fluid level sensing. Refer to Brake Warning System Description and Operation .
- Parking brake state sensing. Refer to Brake Warning System Description and Operation .
- Rear compartment interface. Refer to Power Door Locks Description and Operation .
- Horn interface.
- Door lock interface. Refer to Power Door Locks Description and Operation .
- Bulb check. Refer to Instrument Panel Cluster (IPC) Description and Operation .
- ETS (Pontiac Only). Refer to ABS Description and Operation .
- A/T shift lock control. Refer to Automatic Transmission Shift Lock Control Description and Operation .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.