Quote Originally Posted by ThisPartySucks View Post
A friend of mine has an '09 Aveo, ~68k miles. Her car is sporadically accelerating suddenly while stopped at red lights. Thankfully she has the presence of mind to throw the car into neutral to avoid ramming into the car in front of her.

I've scoured the internet regarding this issue, and although I've found many others who are having this problem, I have yet to find a solution. I'm a car-savvy guy, but I'm perplexed by this issue.

- Spark plugs/boots replaced per the ignition recall
- Throttle body cleaner has been liberally applied
- No visible vacuum leaks
- Problem seems to occur mostly after car has beet sitting for longer periods of time (overnight)

It appears as though the '09 model year does not use a throttle cable, but instead is electronically controlled. Could this issue be caused by a faulty ECM?

Any help is greatly appreciated!
Check the accelerator pedal itself. It contains an electronic component (AKA 'drive by wire'). My 2009 was diagnosed with a faulty pedal assembly when it was barely new, only two months old. It wasn't doing anything as dramatically weird as yours, but the dealership found it to be defective - so that part can and does go bad.

IMHO, this would be a great car if it didn't have so many cheap, crappy, failure prone electronic components in it.