Onstar Module Replacement ETA?

Add me to the list! 2024 GMC Acadia Denali with SuperCruise. Paid thousands extra for this option and the Onstar or "Telematic" module is out. No ETA, all I get from two dealerships is "Back Ordered." We have had 80 vehicles, all but 5 were GM. It may be time to try another manufacturer.

We understand the importance of having a vehicle you can rely on. Thank you for bringing this ongoing part delay to our attention. Please know, we do depend on our certified dealerships to provide all technical and diagnostic insight. If you’re having continued trouble with your Sierra, we would like to further connect with your service team and provide any available assistance that we can. Moving forward, kindly email socialmedia@gm.com with ATTN: OnStar Community/osugigi26 in the subject headline. We hope to hear from you. 

Is there an ETA.  My 2022 Sierra has been diagnosed as faulty and told there is no time for replacement.

Thanks everyone for all your replies and support. I did receive a call this morning 16 January from the Service Dept. of my designated GMC Dealership regarding the OnStar module replacement and I am schedule for installment on next week.  Will keep you all posted of the outcome. My prayers and support to all of those still waiting for their OnStar module replacement to be resolve.

Update: After 7 months (over 25% of the time I've owned my 2023 Sierra 1500), the OnStar Telematics Module was replaced yesterday (30-April-2025). The local dealership was not able to extend my 36 month subscription like the OnStar representative told them they could when I first took the truck in to address the issue when I was able to get the first available service appointment back in November. 

When I used the OnStar button in the truck to activate the new module, I spoke with Ronda. She was the FIRST and ONLY person from OnStar who seemed genuinely concerned about my customer service experience, but was limited in what she could do to assist in extending my contract for the months of lost service due to lack of parts availability. The issue had to be escalated to a department that had already left for the day.

Not all of the features reliant on the telematics module were immediately available upon activation. During my hour drive home from the dealership, vehicle features reliant on the OnStar system slowly came back online. This was NOT my experience with these same systems when I had originally purchased the truck and activated OnStar.

As for the issue with coming out to the truck and finding it DEAD one day, the service department believes this was due to the original faulty telematics module. Time will tell if the replacement and software patch fixes this issue.

For a vehicle with so many systems designed around the OnStar telematics module, a lack of replacement parts or any transparency about when they can be expected should they fail, I really don't have much faith in GM products any longer. The OnStar system has a LOT of potential, but all this is overshadowed by its lack of reliability. This is especially troublesome for a system that claims to be there for drivers in emergency situations when they may be incapacitated.

For others in this situation, I hope you have a better, more rapid resolution experience than I did. When it's time to purchase your next vehicle, think back to how you were treated and if GM made you feel like you were a valued customer. If everyone at GM and OnStar acted like Ronda, I wouldn't hesitate to come back to the brand, but she was the exception rather than the standard.