Foosh

This thread is a good lesson to make sure that OnStar, or similar service, is either cancelled or transferred to a new owner of any used car.

Moreover, those trading in their cars should erase Homelink settings for garage doors, and erase all personal destination info from nav systems.

There can also be a positive side to buying a used car. Years ago, we purchased low-mileage Mini Cooper S convertible, and someone forgot to cancel their Sirius/XM subscription. It was free to us for almost a year.

Walter Raulerson

Is that C8 named Christine?

Avanti

Just another of the surprise "options" you get with a rolling 'puter... occasional glitches. Some might suggest it's just the result of a random quantum wave-function collapse in the electronics... somewhere.

CGZO6

This is the most ignorant statement I've ever seen posted on this forum. Modern emission systems do not clean carbon monoxide from ICE exhaust.

WhiteDevil828

The FOB stops transmitting after a certain amount of time sitting still so there’s no need for a Faraday cage. Many times while I was detailing while the FOB is sitting on the passenger seat. When I go to start the car the DIC tells me FOB not detected. When I move the FOB the car starts right up.

Chip02

I could swear I heard a Car Talk podcast where a caller had this problem (yes, I'm still addicted to the show). IIRC it was a bad solenoid. Of course that was on a car probably decades old and it's hard to believe modern electronics would allow that to happen.

YO-EL

Thats what I was thinking as well, or distance...

hawkgfr

When I was a lad my first car was a 65 GTO and one day I pulled into a parking spot and turned the car off and pulled the key out and it started cranking over with no key....turned out the ignition switch shorted out...lucky it was a manual and I clutched it and stick the key back in and got it to stop before anything else was hurt...Ahh the good ole days...I still miss that car...

BearZ06

Nice first car!

This whole thread is Much Ado About Nothing, IMO. It's a forum thing but how surprising how so many can overreact.

FlyinLow

We had a Dodge Ramcharger at work that would do this, you could slam the door and the truck would crank over. It wouldn't start because the rest of the ignition circuit was not on because the key wasn't on. Ended up replacing the starter solenoid.

gliot1

cars of that era and earlier, you could leave car running and take out key. In Chicago winters many drivers would leave car running, take out key, lock car, to keep heated while running into a store quick. I remember my folks seeing a negative when they moved the key to the steering column and you couldn't pull it out with car running. In previous generation, my dad talked to drivers double parking, leaving the car running, and if it needed to be moved other driver would just move it. Different times....they didn't lock their home either. It's a shame now that the thugs and crooks rule us. We could still be living that way if we chose.....

C7Me

I would bet it's ghosts!! I have a similar problem with a ceiling fan. It turns the light on every morning (and other random times also) after my wife goes into the bathroom to get ready for work. It's everyday, but not on weekends or when I'm out of town. 3 days in a row it went on at exactly 6:11am, the other days it varies from 6:11am to 6:26am. Very strange! We think it's ghosts, but in all reality it is probably some random signal getting sent to the fans remote control to turn it on. It's just odd that it mostly happens around the same time in the morning when I'm at home and the wife in the bathroom.

c8nukeZ51

Are you the original owner? if not then the previous owner could still have access to the onstar account and is playing with your head

Foosh

That was answered above. The OP purchased the car used, and OnStar and the MyChevrolet app were still registered to the previous owner. Someone with access to the previous owner's log-in almost certainly started it.

OP contacted OnStar after the incident and got that straightened out.