OnStar Guardian App
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Vehicle Mobile App
Find FAQ and support for the myChevrolet, myBuick, myGMC and myCadillac mobile appsMobile App Support Topics from OnStar Subscribers
Summary report of notifications
Where can I get summary of notifications from Onstar? Onstar is sending me notification whenever I drive eratic or slippery road, hard turn. Onstar notify me on my phone which is good but I need the summary report. I need it for investigation while my car was under repair at repair shop for 3 days im getting notified by onstar.
Remote climate start often fails in '26 Lyriq
When I use the myCadillac app to try to remote start climate in my car, it usually fails. Other actions often take forever and fail, too. The dealer has looked at it and said to contact OnStar. I previously had a '24 Lyriq and it had the same problems - unreliability of remote actions. It doesn't seem to matter if the car is connected to my home WiFi or if I'm away from that. Pretty frustrating to not be able to come back to a warm car in our frigid Midwest winters despite having purchased a luxury car. I've been through several support tickets and basically lost faith that GM knows what it's doing.App is not updating
My app hasn’t updated for 2 days now. It hasn’t changed the fuel level, miles, and tire pressure levels. Only thing working is my remote start and locking and unlocking of doors. I have already restarted my phone, uninstalled the app and reinstalled it, logged out and logged in, checked to see if my phone needed an update, and checked to make sure my onstar account was still active. What is going wrong with the app connecting to my vehicle????MyGMC app won't send remote commands
My app is working except it will not send remote commands. When I select lock, unlock or remote start it just says sending for a while and then I get an error message telling me "Unable to reach Sierra 2500HS. Use key to start manually and restore connection." I have reached out to Onstar and GM support multiple times with no resolution. Onstar is supposedly linked to my GM account and all looks fine but OnStar cannnot reach my vehicle. My Onstar button will let me call Onstar just find. HELP!!FYI...Trailer Light Testing Is Back
To all community members, if you missed it, I have some good news. Back in March, OnStar removed the Trailer Light Testing feature from the mobile apps, which was a major headache for many of us. The Update: As of the last couple of weeks, the feature has officially returned! You can find it again under the Control Tab in both the myGMC and myChevrolet apps. What’s Next? I’m really hoping this means Climate Controls are next on the list to be restored. They were removed around the same time earlier this year, and with winter hitting hard, having that functionality back would be a lifesaver. Keep an eye on your apps and make sure you're running the latest update!
