I own a like-new 2010 Cobalt LT coupe 2.2L (mileage 18,000)

I got a "failed EVAC vent solenoid" troubleshoot message simultaneous with failure of my "remote start" function.

Could these be related problems?

Yes, when a PCM code is set, this inhibits remote start......fix the EVAP code problem, clear it, and then the remote system should work again....

I will report result soon.

the code is set by the gas cap being loose or off about 90% of the time. i would check that.

Thanks Jason, could have been, but it'* not that

the vent valve is normally seized, ive had luck taking them out, spraying them with wd40 and actuating them a few times with a car battery. they are 12v and it wont hurt anything if you get the polarity reversed. if you try it both ways and nothing happens you will have to get a new one. they are pretty cheap. i would put some wd40 in the new one too. it lasts longer than the stuff they have in it to begin with