OnStar outages and problems
We haven't logged a single user report for OnStar in the past 24 hours, and its uptime over that window is 100.00%.
No 15-minute window had any reports at all, so the chart above stays flat.
OnStar problem spikes, last 30 days
Since 5 October, OnStar had no outage spikes or periods of elevated reports.
A spike is a sharp rise in problem reports from users in Switzerland, kept exactly as this page showed it at the time. This history starts on 5 October 2026, when our archive began. Monthly reports for all services
How to fix OnStar not working
OnStar is up on our end, so if it won't work for you, the problem is most likely on your side. Work through these in order:
Press the blue OnStar button first
If you typed is onstar down right now into a search bar, start inside the car. Press the blue button. An advisor answering means the vehicle's cellular module works and the fault sits with your phone or GM's servers, so check the tracker before anything else: it reads operational right now, with 100.00% uptime across the past 24 hours. A silent button points back at the vehicle.
A stale app login: sign out and clear the cache
A stale token causes most 'remote command failed' errors in the myChevrolet or myGMC app. Sign out first. On Android, open Storage inside the app settings and clear the cache before you sign back in, while on iOS you offload the app because Apple ships no separate cache control. This fix lands in about a minute.
Move the car out of weak AT&T coverage
OnStar data rides on AT&T's network in the US, and an underground garage or a rural dead patch kills remote start even when the honest answer to is onstar down is no. Drive somewhere open. Try the command again once the dash shows full bars; if our onstar outage map has reports clustered in one region instead of spread nationwide, a local tower is the culprit and only AT&T can fix that.
Network and DNS check on your phone
Remote commands travel from your phone to GM's servers, so a broken DNS entry on the handset mimics an outage. Toggle airplane mode. Then switch off home Wi-Fi and use cellular data, or set private DNS to 8.8.8.8 on Android, and reload the app. For context, drivers searching onstar outage today have filed 0 reports in the last day, and the last confirmed incident was more than 24 hours ago; if the tracker spikes while your app stays dead on both Wi-Fi and cellular, the problem sits on GM's side.
Fix OnStar on Windows, Mac, Android and iPhone
OnStar on Windows
- Fix
- Clear your browser's cache and cookies, or temporarily disable extensions that might block the OnStar owner portal. You can also try accessing the site using an alternative browser like Edge or Chrome.
- Check
- Attempt to load the official OnStar login portal to see if it returns a server timeout or connection error. You can also check online outage detectors to see if other web users are experiencing issues.
ping onstar.comTest whether OnStar's servers replynslookup onstar.comCheck that OnStar's DNS resolvestracert onstar.comTrace where the connection dropsipconfig /flushdnsClear the DNS cache, then reloadOnStar on Mac
- Fix
- Clear your Safari website history and data, or try accessing the OnStar portal using Chrome or Firefox. Ensure that your Mac's firewall or VPN is not blocking the connection to OnStar's servers.
- Check
- Try loading the OnStar website in your browser to see if you get a generic connection error. Check if other web-based services are loading normally to rule out local network issues.
ping -c 4 onstar.comTest whether OnStar's servers replynslookup onstar.comCheck that OnStar's DNS resolvestraceroute onstar.comTrace where the connection dropssudo dscacheutil -flushcache; sudo killall -HUP mDNSResponderFlush the macOS DNS cache, then reloadOnStar on Android
- Fix
- Clear the cache and data for the OnStar Guardian or GM app in your Android settings, then restart the app. Make sure the app is updated to the latest version in the Google Play Store.
- Check
- Check if the OnStar app shows a connection error or fails to send remote commands to your vehicle. You can also check the Google Play Store for recent reviews mentioning login issues.
OnStar on iPhone and iPad
- Fix
- Force close and reopen the OnStar Guardian or GM app, or reinstall it from the App Store if it continues to crash. Ensure that cellular data permissions are enabled for the app in your iOS settings.
- Check
- Open the OnStar app and verify if it fails to authenticate your credentials or load vehicle diagnostics. Check the App Store for any pending updates that might resolve compatibility issues.
What happens when OnStar goes down
OnStar is the safety and connection service built into GM cars. It runs crash response, remote start through the MyChevrolet and GMC apps, stolen vehicle tracking, and the in car wifi hotspot, so a dead server means more than a minor annoyance when remote start fails in a parking lot. If you keep asking is OnStar down right now, this page shows the live answer, with a 24h uptime of 100.00%.
The app goes first. You tap remote start and get a spinning wheel, a cannot connect error, a frozen vehicle status card, or data that has not refreshed since yesterday, while the blue button in the car often keeps working because it rides a separate cellular channel. We logged 0 reports in the last 24 hours, and the top complaint during a real OnStar outage is the advisor line refusing to connect when you press it.
OnStar FAQ
Is OnStar down right now?
What is the OnStar server status?
Why is OnStar not working today?
How do I check if OnStar is down?
How we track OnStar
The status on this page comes from user-submitted problem reports for OnStar, counted in 15-minute windows over the last 24 hours. Each window is compared with the normal level for OnStar, so a few complaints on a quiet day don't trigger anything, but a sudden jump well above normal does.
When reports climb well above normal, the status here changes to partial outage or major outage and the chart moves with it. OnStar doesn't publish a public status page that we know of, so user reports are often the quickest sign that something is wrong on their side.