GM OTA Update Aims to Prevent OnStar, Wi-Fi, Navigation and Super Cruise Issues
GM has released an over-the-air software update aimed at helping prevent loss of functionality for several key connected vehicle features, including OnStar, Wi-Fi, Navigation, and Super Cruise.
The update is listed as GM Update N25-252332 and is associated with field actions N25-252332, N26-254733, and N25-252148.
This is not a traditional repair bulletin with a long diagnostic procedure. It is an over-the-air software update related to the Telematics Connectivity Platform, also called TCP. That matters because the telematics system helps support many connected services that owners use every day.
What does this GM OTA update fix?
According to the bulletin, the update includes fixes to help prevent loss of functionality for connectivity features such as:
- OnStar
- Wi-Fi
- Navigation
- Super Cruise
In plain English, this update appears focused on keeping connected vehicle features working properly. If those systems lose communication or fail to function as expected, it can affect convenience, navigation, connected services, and hands-free driving availability.
Which GM vehicles are listed?
The bulletin lists model years 2023 through 2026 and includes Chevrolet, Cadillac, and Buick vehicles.
Models listed in the bulletin include:
- Chevrolet Blazer EV
- Chevrolet Silverado EV
- Chevrolet Equinox EV
- Chevrolet Corvette
- Chevrolet Colorado
- Cadillac CT4
- Cadillac CT5
- Cadillac Optiq
- Cadillac Celestiq
- Cadillac Lyriq
- Buick Envision
- Buick Enclave
- GMC Sierra EV
- GMC Terrain
- GMC Acadia
- GMC Traverse
- GMC Canyon
As always, inclusion of a model in the bulletin does not automatically mean every vehicle is affected. Owners should check their vehicle for available software updates or ask a dealer to confirm whether any related field actions apply to their VIN.
What customers can do
If you own one of the listed GM vehicles, check whether your vehicle has an available software update.
Make sure the vehicle has a usable connection. Depending on the vehicle, that may involve built-in cellular connectivity, Wi-Fi, or account-related connected-service access.
Pay attention to symptoms
This update is especially relevant if you have noticed problems with:
- OnStar not connecting properly
- Vehicle Wi-Fi not working as expected
- Navigation issues
- Super Cruise becoming unavailable
- Connected services dropping out or acting inconsistently
If these issues continue after the update, document what is happening and schedule service.
What the dealer may do
If your vehicle does not complete the update, does not show the update, or continues having connectivity-related problems, a GM dealer may perform vehicle wide programming to update the module software in your vehicle.
The dealer may verify whether field action N25-252332, N26-254733, or N25-252148 applies to your specific VIN. They may also check whether the software update has been completed and whether the vehicle’s telematics system is operating correctly.
Because the bulletin identifies the affected component as the Telematics Connectivity Platform, dealer diagnosis may focus on the connected-services system rather than a single feature like navigation or Super Cruise by itself.
Why this matters for EV owners
For GM EV owners, connected vehicle features are a major part of the ownership experience. Navigation can be tied into route planning and charging stops. Super Cruise depends on vehicle systems working correctly. OnStar and Wi-Fi are part of the broader connected-vehicle package.
When those systems work, they fade into the background. When they do not, it can make the vehicle feel less reliable even if the underlying driving hardware is fine.
Bottom line
GM Update N25-252332 is an over-the-air software update intended to help prevent loss of functionality for connectivity features including OnStar, Wi-Fi, Navigation, and Super Cruise.
If your vehicle is listed and you receive an update prompt, it is worth installing. If your vehicle has ongoing connected-service problems, ask your dealer whether the related field actions apply to your VIN and whether the update has been completed.
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Source: GM Update N25-252332
