Hi i hava 1991 ninety-eight and it wont start, it gives me a message about the pass key malfunction. the car hasn't been started in over 3 months, when the car shut down, i was just leaving the gas station, it did this before but it ststred, my question is, what is the most common way to fix my problem?

the key is not damaged and the chevrolet dealer told me it was the engine control module the key is not damaged and the chevrolet dealer told me it was the engine control module

Thie tiny wires that go to the ignition lock cylinder may have broken. It has to be replaced and have a new chip key cut to fit the new lock cylinder. . If the ecm has the number 1228253 on it you should replace it as they have a cutting off problem but they will start right back up. The lock cylinder problem will only make the car not turn over and then you will get a pass key message. It will not make the car cut off after it is running. Thie tiny wires that go to the ignition lock cylinder may have broken. It has to be replaced and have a new chip key cut to fit the new lock cylinder. . If the ecm has the number 1228253 on it you should replace it as they have a cutting off problem but they will start right back up. The lock cylinder problem will only make the car not turn over and then you will get a pass key message. It will not make the car cut off after it is running.