Technical and Service Support

myCadillac on Lyriq will not open

Since day one when I purchased my 2024 Lyriq the myCadillac app in on the vehicle will not open. It goes to open then crashes. I can't uninstall or reinstall it? Likewise, on my phone the myCadillac app will randomly connect and update the stats from...

Apps on Mylink 3

Hey, I have an Onix Plus LT2 2025, on this model is not available the apps download? Like Spotify or Maps+ (NAV)

The high country was a shame was a sham is a sham

not only have I not been able to get them to stop billing me for a vehicle I terminated lease on in 2023 June but but on a separate issue as this was for the Cadillac, but on a separate issue I want to make sure everybody knows what a **** **** **** ...

On star module has quit working.

On star sent me to dealer who cannot see me until next week which is 2 weeks after reported. They will need to keep my vehicle for up to 72 hours. And do not seem to know what to do when they receive my vehicle.

Monthly report no longer reports energy efficiency stats.

The format of the monthly diagnostic report for my two Chevrolet Bolts changed this month and no longer include statistics on energy efficiency (MPGe, kWh/100 miles, miles driven, etc.). I use this information for a variety of purposes and collecting...

Alexa issue 2024 GMC Sierra : Can't log into Alexa

When i try to log into Alexa i get a no internet error. In fact I actually have never been able to log into it. Never even did the setup process. But all other apps, hot spot, even Amazon Music works. I think reinstall of the Alexa app may fix the is...

WIFI - No Internet Connection

I see a bunch of posts with similar WIFI issues. We are experiencing two issues....not sure if they are related: 1) credit card on file expired so we updated it with an advisor. The monthly On-Star WIFI $19.99 charge goes through fine but the separat...

XT4 electronic issues

My 2020 xt4 is having alot of electronic issues after getting fuse block replaced its been to the shop twice and still isn't fixed. The auto start/stop function doesn't work. No light or response from the "a" button in the center. Navigation pops up ...

WiFi no internet connection

Brand new GMC Yukon XL 3 days old!! WiFi connects but no internet. Seems to be an issue. Has anybody found a resolution for this?

VIN saying my vehicle is older than 2005..it's a 2015

Just got a traverse and when putting the VIN into onstar it says my vehicle is older than 2005. I went and looked it up to see why and seen that onstar needs to do some updating and something about the batch numbers but who knows if they will. So if ...

On Star module

I have a 2023 Cadillac XT6. My onstar, navigation, hands free phone, gps all stopped working in December. I took my car into dealer who said I need a new on star module but they are on back order and there is no date for the part to arrive. Coming up...

Change dealership for warranty service

Hello, I am having my car serviced by another dealership in lieu of the one I originally purchased the vehicle at. The old dealership keeps on calling me and will keep on calling me until I change the dealer on On Star. Can someone please show me whe...

No internet on my truck for the past 3 year ever after reset after reset.

After paying for ATT cellular in my truck for 3 years it really never works. I get wifi but not connection out. I invested money (paying for service). Lots of time contacting onstar for resets and ……. Still no internet no solution. I call the reset t...

Truck not connecting to Internet

My 2022 GMC Sierra had to have a computer reset as it was not connecting to the internet. It has now been returned from the dealership and the computer says i have to shop and buy a plan. I already have a plan that I pay $39.99 a month for so why won...

OnStar Community

Forum Posts

myCadillac on Lyriq will not open

Apps on Mylink 3

The high country was a shame was a sham is a sham

On star module has quit working.

Monthly report no longer reports energy efficiency stats.

Alexa issue 2024 GMC Sierra : Can't log into Alexa

WIFI - No Internet Connection

XT4 electronic issues

WiFi no internet connection

VIN saying my vehicle is older than 2005..it's a 2015

On Star module

Change dealership for warranty service

No internet on my truck for the past 3 year ever after reset after reset.

Truck not connecting to Internet

Resolved! My Chevy app not opening. I have already uninstalled and reinstalled it

Vehicle status in myBuick app not updated for 4 weeks

My Chevy app not opening. I have already uninstalled and reinstalled it

Both rear tires flat (false diagnostic alert)

Still waiting for my OnStar modlule

Flat tire and my Diagnostics Report is not updating on line

"Diagnostic Alert" while truck is off?

When I sell my vehicle, will I get a refund when cancelling my OnStar service?

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