Oldsmobile Alero Theft Relearn Procedure

Starting problem with my 1999 Oldsmobile Alero 3.4l v6. Just tried to start it. I just tried to start my Olds Alero. I turned the key and it wont turn over. The security light is on the dash. Why is the light on. Do i need to scan for codes, or is there a simple fix for this problem. I have read you can just relearn the theft system to get the car to start. Is that true? Any help would be great !

Answer: This is a common problem on this and many other GM vehicle. You can try this relearn procedure below. It usually will get the car to start.

Attempt to start the engine, then release the key to ON, vehicle will not start. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF. Turn OFF the ignition, and wait 5 seconds.

oldsmobile alero

The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK. Start the engine, the vehicle has now learned the Passlock Sensor Data Code and/or password.

Best to have a battery charger on during this time to avoid a weak battery. A very weak battery can cause programming failure and could even drain your battery so far that it will no longer crank over and noww you think you still have a problem.

The problem wwith doing this is that it is just a temporary way to get your Oldsmobile Alero to start. This procedure is not fixing the problem. The problem may be in the Passlock or theftlock sensor or the ignition switch itself. We have many articles on this common problem with pictures and repair procedures.

Ask A Question For FREE. No Login Required.

Q and A Main

How Things Work