(24 Sierra Denali 1st Ed) I ran into issues today during the drop off. The bad news is that no matter how I worded, providing the mnf file and the bulletin number posted everywhere, the service rep could not find the update. He said it was because my VIN wasn't tied to the update or something along those lines, and I looked like a crazy man trying to explain to him how it was all over various internet forums so it must be true.
Luckily, at least he was gracious enough to find a "work around" to trigger a reason to update the modules under warranty. I'm hoping that this will automatically pull up whatever the latest file is, otherwise it will have been a waste of time. On the downside, the one EV tech they have is not in, so I'm out of a truck for roughly 4 days. On the positive I'm cruising in the 25 Denali, which is nice so I can get a feel for the updates, some of which I've already noticed.
It was a roller coaster of a morning. I give props to the advisor for at least trying to help. However, I give poor marks to GM because I have to take my morning to do this rather than OTA, AND the service centers don't get access to this info ahead of time. How is it that I, the consumer, have more data and info than the service center. When these things roll out, there should be a nationwide campaign to make sure everyone is on the same page. This is the type of experience that leads me towards wanting a Tesla.