I've got a 2009 CTS-V, never had any major problems and completed 100K service within the past few months. As of last night the car won't start- auxiliary and electric turns on as normal, but engine won't turn over. Check engine light turns on, but there's no error message. Similar to if the steering wheel was locked, but that's not it and I've played around with turning the steering wheel while trying to start.
Any ideas I should try before calling the dealership? Thanks