Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** to hear about what is going on with your vehicle. The most common cause of this is a bad ignition switch. These are very common on this vehicle. They fail internally and will sometimes not start the vehicle and others it will not turn it off. It can also be a bad body control module but that is not as common. I would start with the switch. It can be tested with a voltage meter or simply replaced to start. I hope this helps. Let me know if you need further assistance.