Onstar Module Replacement ETA?

I guess I get to join this group of upset customers, my 23 Yukon Denali on-star module went out as well.  Dealer is telling me 4-6 months.  The motor spun a Rod at 800 miles and was in the dealer for 6 months waiting on an engine.  I paid for 3 years of on-star service when I bought the vehicle.   So I guess on-star gets 1 year of free money, and I get screwed out of 1 year of on-star. 

I have had the same issue since about 8/20 when it first went out in my 23 Tahoe High Country. Connection came back for a few days then went back out. Dealer said I need a new module. The module has been on back order for over a month. I paid extra for supercruise with 3 years included with the purchase and wifi accessibility. I have no access to those technologies anymore with no resolution in sight. I’d love if OnStar would prioritize this issue and get us our replacement modules for these vehicles. Why even buy new if you have to deal with used car issues? 

I also bought a GM vehicle a 2020 Cadillac XT5. And my reason for buying was so I could travel by myself with no fear. My husband has dementia and doesn't like to travel anymore. So for me I thought this vehicle would be perfect for my situation. I know the frustration your feeling. Spending hard earned money on a car that did NOT meet our expectations! Thank goodness my grandson showed me how to plug in my iphone and use my maps on my phone. But as of a week ago even that works off and on. Will NEVER buy a GM vehicle again!!!!!! I do not feel safe. I feel your pain and hope they can resolve this issue!!!

I have a 2023 GMC Sierra 1500 AT4X. My truck has under 11,000 miles and it needs a new OnStar Module. My truck is scheduled to go in to the dealership on 12/12/24. I have been without all the functions that rely on the OnStar module to function since 10/15/24. The dealerships in my area are out months to try to get an appointment. Aside from wanting to know when the ETA of the new modules will be, I'd like to know if Onstar is going to credit us back the downtime we have experienced because of faulty modules? I don't think we should pay for services that we can't use because we cant get the problem fixed expeditiously due to OnStar and GM not having the part. Like I said, even if the part was readily available I'd still be waiting two months to get the part installed because dealership appointments are eight plus weeks out. Again, we continue to pay for a service that we can use for reasons beyond our control. So what are you going to do OnStar? 

I’ve been driving Yukons for over 10 years, and my 2023 Yukon, purchased new, started to lose time on the onboard clock, not display the speed limit, and not connect to the MyGMC app 8 months ago.  I discussed all these issues with the dealer’s service department during 3 separate service visits and was told that perhaps the system would re-set itself.  After having the Serial Data Gateway Module recall completed, and told again that perhaps that would address the various problems, which it did not, I finally called the 1800 number in the GMC app.  They diagnosed that my Onstar system was not working and was offline for 8 months and at the time the car had 19k miles and the dealer needed to check the problem.  The dealer found the Onstar Module was not working and needs to be replaced.  The part is on a national back order with no ETA.  Very disappointing to have a wide spread problem that apparently isn’t part of any check list or isn’t easily diagnosed.  Then having the part not available and not communicating resolution timing is completely unacceptable.  It is fortunate that I made the call and figured out the problem 4k miles before the warranty ran out - although perhaps that was the plan all along - avoid detection and maintain back orders until warranties expire.  For a $75k automobile, I expect higher quality service and response.  It is also awful that Onstar has not delivered service to me for a third of the time that I have contracted with them.

I have become one of the casualties of the Onstar Module.  I booked an appointment at my GMC dealership for an oil change and recall software update to my 2022 GMC Sierra Denali 1500.  Several days before my appointment, I noted my truck connectivity via the Onstar system had stopped.  The dealer noted the issue and began the oil change and the software update.  Apparently during the software update,  the ability of the computer system not to be able to communicate with the Onstar Module made the truck computer system that deals with all the safety systems, four wheel drive, etc., to illuminate all dash warning lights and many of the systems to stop functioning.  The dealer informed me they believe the problem can be corrected with a new Onstar Module.  However, there is no ETA on a replacement.  My truck is now un-usable and sitting at the dealership.  What is being done to solve this repair part problem?  

I also am having the same issue on my 2022 Sierra. The dealer stated there is no estimated time for receiving a new module. It is very frustrating to pay for these services and not have access to them. I would hope OnStar and GM would make this right.

I also am having the same issue on my 2023 Denali Ultimate. My engine light is on and code from dealership is saying its my OnStar module. The dealership stated there is no estimated time for receiving a new module. It is very frustrating to pay for these services and not have access to them. I would hope GM would make this right.

How long are people waiting to get a new OnStar module? 

About 3 months. I finally got some time to call OnStar and was told I'm still under the trial period in which before this issue, i was impress the OnStar options I have on vehicle.  So, I sign in to website and elected to extend the period. According to the sales tech, once my trial period is over, I will have the option to cancel.  On 30 Dec, I stop by the Dealership GMC Legacy, Slidell LA to see what was the latest status. There still waiting for the part to come in. In meantime, my Onstar is not working and I believe there is hidden cost I'm currently paying for its services. My engine light remains on and I'm not sure what my next step will be. I always expected better of GMC in doing the right thing and hope this can be resolved soon. Family of GMC owners for decades. The dealership has been supportive and has made it clear they're waiting on the part. I don't know what my options are other than waiting at this point, but I am leaning more to contacting a friend of mine (Congressman). As a Retired Vet, I have patience, but 90 days plus is a bit much driving a 2023 Ultimate 1500 Series with the engine light on.  From my understanding, these parts are coming from a 3rd party which is currently back log.