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 VARIANT/TRIMSECTION 2 (AUTOMATIC TRANSAXLE DIAGNOSIS - 3T40)SELF-DIAGNOSTIC SYSTEMDIAGNOSTIC SYSTEM CHECKTEST DESCRIPTION
2001 Chevrolet Cavalier LS, 2.4 T
Test Description
2001 Chevrolet Cavalier LS, 2.4 TSECTION Test Description
WARNING: This page is about a different variant/trim than selected.
The numbers below refer to the step numbers in the diagnostic procedure:
- 1
This step determines if the scan tool is receiving power through the DLC connector. - 2
The MIL should illuminate whenever the ignition is ON and the engine is not running. - 3
This step determines if the PCM is transmitting class 2 serial data to the DLC and that the class 2 data circuit is not open or shorted. - 4
This step determines if a DTC is current or stored in history.
RENDER: 1.0x
NO RELATED
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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.