Forum Discussion
Telematic Control Module needs replacement, but backordered with no ETA?! UNACCEPTABLE
My 2024 Equinox EV 2RS (Purchased brand new in November '24, only 1,568 miles on to-date) is now in the dealership for the third time due to what was thought to be a 12v battery problem. Turns out, it was a faulty Telematic Control Module that needs replacing, and the dealership that's working on it says GM has no timetable/ETA for the part?! The amount of posts on here reflecting how frequently this is happening should make GM want to have THOUSANDS of these parts on hand for immediate deployment, not arbitrarily informing dealerships, "There's no ETA." I'm a new mom and back to work for the first time since giving birth in October, and being unable to count on a vehicle to simply work is beyond defeating.
99 Replies
Same issue here with the 2022 GMC Sierra Temematic Control Module
right at 3 years of ownership. Actually did not notice this for some time since I rarely use onstar. Now I am having to spend my money and time to this replaced. Dealership quoted me $700...Our team understands how frustrating unexpected repair costs can be for our loyal drivers and appreciates you reaching out to us directly, @Tylerpate. It would be our pleasure to learn more about the situation to assess all available opportunities for additional support towards an appropriate resolution to these concerns. When you have a moment, please send us a private message with some more details to best proceed with this support. We hope to hear from you again in the near future.
Just got my 2024 Equinox EV back from the dealer. Had to wait about three weeks for replacement telematics control module to come in. Not too bad. Took about two hours to replace. Everything works great now and I just hope it stays that way!
We are glad to hear that everything is working smoothly for you again. Should you have any questions or concerns in the future, please feel free to reach out to our team. We're always here to help!
Same here for my 25 Blazer EV. And for those of you who don't know this, the Blazer and Equinox EV shipped with an infotainment system that has NO CarPlay or Android Auto. What that means is that we have ZERO navigation system options at all. And more concerning for us, no ability to easily plan routes that may require charging stops.
Without those capabilities we are basically driving $60,000 golf carts.
But don't worry, the advisers keep telling me they will contact the dealer....
This is likely my last GM product, and I have ONLY driven GM my entire life.Update. My OnStar module repair was completed, just short of 30 days without service. Car is now, at least, functioning as it should.
Thank you for the update. We’re glad to hear your OnStar module has been successfully repaired and that your vehicle is now functioning as expected. If you need any further assistance or have additional concerns, please don’t hesitate to reach out.
2025 Chevy Equinox EV. 9 months later. Same exact problem. How is there no class action lawsuit / forced buyback program yet?
Please know, our team is more than glad to offer our support through the repairs at your dealership and answer any questions you may have in the meantime. If this is of interest to you, do not hesitate to send us a private message so we can connect with you further.
Can your team ensure that part seemingly going out on hundreds of vehicles isn't backordered for weeks or months, so my vehicle can be repaired the day it's diagnosed?
I would like to know if this issue has been fixed. I do have issues with a very resent purchase of a used 2025 GMC Acadia and found the On Star future didn't work; no navigation, no GPS and no On Star help plus no wifi. I hope to have it taken care next month.
Hope everyone got helped!
This concern surrounding OnStar in your recently purchased Acadia sounds frustrating, @DeJamz. Please send us a private message to OnStar Support so we can look into this further. Just select the envelope icon at the top right of your screen to get started.
Well, got my On-Star system (tcm module) checked Monday, they said they're going to order one, maybe come in next week. Hopefully, it does! Can't wait!
Our team would be glad to offer our support alongside your servicing dealership while they address your OnStar module concerns, @DeJamz. Send us a private message with more details including your name, email, phone, VIN and dealership to OnStar_Support to get started. Just select the envelope icon at the top right of your screen to do so. We will keep an eye on our inbox. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement.
so has anyone had any help with the onstar and wifi going out yet the telematics?? i purchased a 2022 silverado hasn’t worked since i bought it damn near a year ago i have called onstar the dealer and have got nothing, at this time my warranty is blown and im stuck paying 41k for something where its never worked properly since i purchased the damn thing !! please someone tell me they have figured out an avenue and why the hell hasn’t there been a recall for christ sake?? anyone??
Allow us to learn more about the situation with your Silverado and explore ways we may be of assistance to you in working toward a resolution, @Tab37. Kindly send us a private message to OnStar Support so we can further investigate. Select the envelope icon at the top right of your screen to do so.
2025 Traverse High Country… no GPS, No SuperCruise, no OnStar connection, etc., etc!!! Ugh!!! And the dealership is 3 weeks out for any electronic diagnostic appointment.
SO very disappointed in my decision to purchase this vehicle and there is no way I would ever recommend OnStar!!! I have called several times and the most frustrating thing is reading these comments posted from hours, days, months, and years ago that are having the EXACT SAME ISSUE, yet when speaking to an advisor, they act as if this is the first time they’ve ever heard of the issue. Now I’m even more frustrated seeing that I will likely be waiting additional time for a part that is in high demand due to failure!! Why is this not a recall!?!?@kTanner1 So we can learn more about your situation and explore opportunities for support while your Traverse is addressed, please send us a private message with more details to OnStar_Support. Just select the envelope icon at the top right of your screen to start.
I am frustrated to because mine is doing the same thing and there is no idea when the module will be available for my car. It is not On stars fault that this issue is happen as It is an issue with the car itself. I contacted On star and they were very helpful. When I told them the issue, right away they told it has been happening to a lot of the 2025 vehicles due to an update issue with the module.
I hope this was helpful
Just had my 2025 Buick Enclave that I bought in September 25 get diagnosed with a bad module. Was told that as of today there were 5200 modules on back order.. WOW!!
Hi I have the same problems with my BLAZER EV 2025 just after I cancelled my subscription plan for on Star one, the next morning after OnStar update no more Google connections a bunch of stuff on my dashboard appears like high voltage problem detected please find a dealer
We are saddened to hear you have similar impacts to your OnStar module and would like to better understand how to best proceed for the high voltage concerns detected, Richard. If your Blazer EV is currently in service, allow us to gauge how we may be of support alongside your dealership. Send us a private message to OnStar_Support so we can look into this further. Just select the envelope icon at the top right of your screen to get started.
I have the same problem with my 2025 Equinox EV. The dealer diagnosed it as a Telematic Control Module with a no ETA. This is unacceptable. I have none of the safety aspects of the OnStar system. I can’t use navigation. I can’t find a charging station. I can’t see or control anything through the MyChevrolet app. No over the air updates. I have no idea when I will receive the part. I have only 3,500 miles on the car. Not a happy camper!
Our team is here and ready to help, Dave. Please don't hesitate to reach out to us if you'd like an extra layer of support alongside your dealership through this process.