[clyde]

I got the calibration flashed to my car and wanted to leave something here for anyone that might be searching later.

Whether the dealer service tech is able to apply the calibration for your car is dependent on the person at GM Techline that answers the phone when they call. If the person knows what to do, all should be good and you should be on your way with an updated module within an hour.

If they don’t, they may waste a couple hours trying to figure it out before ultimately giving up. If that happens to you and you’re like a bunch of people I’ve spoken to in the past couple weeks, you might repeat this experience at four or five more dealers before it works out, but you should be able to avoid it.

The way to avoid it is for the dealer service tech to hang up on Techline and call back when the Techline person doesn’t know what to do and then repeat that until someone answers that does know. If it’s going to be a successful call, the service tech should be able to tell pretty quickly. Somehow, you need to get this communicated to the service tech whether you can talk to them directly or the service advisor can convey the message.

It's ridiculous that it works this way, but is what it is.