Chevrolet Repair: All Windows Stopped Working

Question
Hello, what do you think would make all 4 of my power windows stop working at the same time on a 1990 Buick Century 3.3?  What is the checking order on a problem like this?  Thank you in advance.
Stephen

Answer
Hello Stephen,
Have you used a scan tool. You can put power to each wire at the motor and see the windows go up or down. If all of them stopped at once, your body control module might have went bad. You will need to have this diagnosed. I hope I helped you.
Thanks for the question.
Jeff