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 MANUALSCHEVROLET1997CAVALIER BASE, 4D SEDAN, AUTOMATIC, 3T40/MD9REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (COMPUTER RELEARN PROCEDURES)COMPUTER RELEARN PROCEDURES"J" BODYPASSWORD LEARN PROCEDURE FOR ANTI-THEFT SYSTEM
1997 Chevrolet Cavalier Base, 4D Sedan, Automatic, 3T40/MD9
Password Learn Procedure For Anti-Theft System
1997 Chevrolet Cavalier Base, 4D Sedan, Automatic, 3T40/MD9SECTION Password Learn Procedure For Anti-Theft System
WARNING: This page does not describe the selected car, but rather 38 other vehicles, including the 1998 Saturn SW2, 1998 Saturn SW1, 1998 Saturn SL2, 1998 Saturn SL1, and 1998 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
- Password learn procedure must be performed if Instrument Panel Cluster (IPC) is replaced. A password is communicated between IPC and Powertrain Control Module (PCM) to provide engine operation. If IPC is replaced, the PCM must learn the password from the IPC.NOTE: If PCM is replaced, the Electronically Erasable Programmable Read Only Memory (EEPROM) should be programmed. When EEPROM is programmed, the PCM will learn the password when ignition is initially turned on. Password learn procedure is not required when replacing the PCM and EEPROM is programmed.
- Attempt to start engine and then leave ignition on. DO NOT turn ignition off. The THEFT SYSTEM indicator light will flash for 10 minutes.
- On Cavalier, THEFT SYSTEM indicator light is located on IPC, just above the vehicle mileage indicator. On Sunfire, THEFT SYSTEM indicator light is located on IPC, just above the temperature gauge.
- On all models, once THEFT SYSTEM indicator light stops flashing, attempt to start the engine. If engine starts, the password learn procedure is complete. If engine does not start, ensure procedure was properly followed. If procedure was properly followed, check for any DTCs. If any DTCs exist, perform test procedures for specified DTC and repair as necessary. See the appropriate TESTS W/CODES article in ENGINE PERFORMANCE.
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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.