I appears to be working for me again. I was really hesitant to delete it and download it again because I'm honestly not 100% certain what my user/pass is for it (which is why I tried a username reminder/password reset on the web site but even that didn't work) and I can't remember what I had to do initially to get it to see my car. Further, I'm pretty certain I never updated OnStar with my phone number because I didn't want them cold calling me (cough XM radio cough) to get me to buy into their service. I also have no idea what my OnStar account number is... so I basically know zero if the app ever logs me out or stops working
I'm also getting annoyed right now because it's the time where all the free stuff is starting to end with the Volt. XM radio is calling me like crazy to sign up. I got a notice in the mail the other day about my first service being due, or over due (I've only had the car ~90 days and maybe 1500 miles, is there really already a service for it?), OnStar has sent at least 50 emails warning me that my data plan is ending. Blah blah blah. All I care about is that my car gets the 2 free dealer included service visits and that the myChevy app keeps working. It's hard to separate all the other BS out from those two things and when today it stopped working and I couldn't log in anywhere I got frustrated thinking I needed to sign up for some pay plan to get it to work >.<
Anyone else confirm that you don't need a paid OnStar service for that basic app usage? (Charge/Fuel level, Tire Pressure, Remote Unlock/Start/Lock)