I don't have a Sonic but I have a Spark and I am sure the Mylink system are similar if not identical. Anyhow I had my Spark in on Monday to get the update done and after 5h they called me and told me that it wouldn't take the update and they don't know why. They further asked me if I could leave it there but I couldn't since I need it every day. So their answer was that would have one of their "tech-guys" figure it out and that they will give me a call. Seriously I don't know what GM is doing but it's very frustrating especially since my friend who works at the dealership told me that they could easily push the update through OnStar, but they want you to come in to see of they can hit you with any sort of maintenance. That's probably also the reason why there is no download anywhere.
Anyways I just wanted to give my input, if I hear something I let you guys now and if you have any more advice on what to do, I'd really appreciate it.
Anyways I just wanted to give my input, if I hear something I let you guys now and if you have any more advice on what to do, I'd really appreciate it.