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App not connected to ONSTAR services


Hello, I recently purchased a 2022 GMC Sierra with the new infotainment system. In 3 short weeks my truck ate throw 3GB, I called ONSTAR for support and they blamed me. Apparently, my phone used all my data. The first girl said they have tools to figure out what used the data from the truck but I needed to call tech support. A few days later I call tech support to be told they don’t have tools to diagnose where the data was used and it was all my phone. 3GB gone and not a single app used on the truck. Then, I try to set up myGMC to my app to use the remote start. It tells me that my truck is not connected to ONSTAR services and to press the blue button, so I did. Just to be told the truck is activated and there shouldn’t be an issue. Over an hour on the phone and logged into the website numerous times, through every single page and nothing. The GMC website literally says my truck is NOT connected to ONSTAR services and there’s no place to link my account. When I try to activate ONSTAR on the website it says there’s an error and to call. How am I supposed to use the remote services when the says my truck doesn’t have ONSTAR activated, but ONSTAR is saying it is activated!?? Tell my why I’m paying for services that I can’t even use?



As an initial troubleshooting step, we recommend that you uninstall then reinstall your myGMC mobile app. This will ensure that you're using the latest most up to date version. Additionally, please ensure you're logging in using the email address that's connected to your GMC Account and that this account is linked to your OnStar Account. If you continue to have difficulties, please send an email to with your subject line as ‘ATTN: OnStar Community/Camarogirl’ so we can reference back to this post.


my chevrolet won't work! 2 days now and no help

there say its a server issue how much longer!!!

We understand how frustrating it can be when the app isn’t working. Our team would like the opportunity to assist with your concerns and get your myChevrolet App up and running again. To get started, please send us an email with details to and “ATTN: OnStar Community/blacktruck” in the subject line so we can further assist.