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 MANUALSCHEVROLET2000S10/T10 P/U 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONCIRCUIT DESCRIPTIONDAYTIME RUNNING LIGHTS AND AUTO HEAD LAMPS
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN W
Daytime Running Lights and Auto Head Lamps
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN WSECTION Daytime Running Lights and Auto Head Lamps
If the headlamp switch is set to the AUTO position while in the LIGHT state, the Daytime Running Lights (DRL) are ON. If the park brake is then set, the DRLs will turn OFF. When the park brake is RELEASED the DRLs will turn back ON. If the headlamp switch is set to the PARK LAMP position while in the LIGHT state, the DRLs will be ON and the park lamps will be ON. If the Headlamp switch is set to the HEADLAMP position while in the LIGHT state, the DRLs will be OFF, the park lamps will be ON and the headlamps will be ON. If the headlamp switch is set to the AUTO position while in the LIGHT state the and the ambient light level conditions change to DARK for 15 seconds, then the BCM will turn the Headlamps ON. When the ambient light sensor is in the DARK state the Daytime Running Lights (DRLs) will be OFF regardless of the headlamp switch position. When the ambient light sensor changes state from DARK to LIGHT the headlamps will turn OFF and the DRL will turn ON after a 20 second delay.
RENDER: 1.0x
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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.