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.
1998 Chevrolet Lumina BaseFACTORY OEM SERVICE PROCEDURE
Programming New Module
NOTE:
New module can only be programmed once. Verify customer's code prior to programming to ensure key code is correct. On RPO 9C3 and 9C6 vehicles, module must remain unprogrammed.
- With new theft deterrent module installed and connected, insert customer's key into ignition key lock cylinder and turn ignition switch to RUN position. Start engine to verify system operation. If engine starts, go to next step. If engine does not start, see appropriate No Start test under SYMPTOM TESTING .
- Observe SECURITY indicator light. Indicator light should illuminate for about 5 seconds and go out. This indicates module programming has been successfully completed. If indicator light flashes once per second and engine starts, module did not program. Check wiring, connectors, contacts to key resistance pellet, and key for defects or intermittents. Repair or replace as necessary and repeat programing procedure.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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