I was just at the dealership last week and they found no new updates for my Blazer EV...sad!

 

Just got the popup on my 2025 blazer ev that it has an update waiting. Update says it's to improve the update process and diagnostics. I'll post more when i get home so it can install.

 

Our 2025 Blazer EV RS AWD (SuperCruise) received an OTA today. Details in the screenshots below. Haven't noticed any differences yet but it appears the B199B (Right Rear Turn Signal - Lighting Control Module) issue with this car may be resolved. I ran the right signal for quite some time and it didn't default out and drop that corner.

Update: GM N25-F172AE

 

Our 2025 Blazer EV RS AWD (SuperCruise) received an OTA today. Details in the screenshots below. Haven't noticed any differences yet but it appears the B199B (Right Rear Turn Signal - Lighting Control Module) issue with this car may be resolved. I ran the right signal for quite some time and it didn't default out and drop that corner.

Update: GM N25-F172AE

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I'm definitely jealous that you got an OTA. I've had my 2024 RS since last May and have not had even one OTA.

 

So far it looks only 25 MY are getting this update. As some of us pointed in another thread the number looks so similar to the october 2024 ota update (N24-F172AC... the only ota update we ever got so far). And the text associated is so similar to that one too.

 

"N24-F172AC... the only ota update we ever got so far". Except I never got that OTA. I did get the vehicle wide reprogramming, including the radio, in November. But I never got a notice that an OTA was coming or that one had been installed. My understanding was that the OTA was really just to enable the vehicle to get real, meaningful OTAs in the future. I'm due back at the dealer in about a month for my 7500 mile service and installation of a 2nd charger door, assumming it ever shows up. Is the content of that single OTA available from the dealer? Can they somehow initiate the OTA? I assume it's possible that I simply missed seeing it install. Is there some way I can check if it snuck by me?

 

2025 Blazer EV RS RWD - Got notification for software update GM N25-F172AE. At first attempt it failed but then retried and it worked.

 

Looks like GM N25-F172AE OTA update is not really happening for the blazer EVs...apart of 2 or 3 people with 25 MY vehicles nobody else are reporting about this here. On the Equinox forum there are reports of more updates including even for 24 MY vehicles. BlazerEVs might be the least favored child of GM it seems.

https://www.equinoxevforum.com/threads/update-n25-f172ae-has-arrived.4082/#replies

 

My girlfriend got this OTA for her 2024 Equinox EV 3LT AWD yesterday. She has received two other OTA updates since purchasing the vehicle in July.

Meanwhile, my 2024 Blazer EV RS AWD has never received an OTA update. I did have updates done at the dealership last month though.

 

Got notified today about GM N25-F172AE being ready for install on my ‘24 LT. I tried installing it 3 times as I sat in the car and it failed all 3 times. I previously installed N24-F172AC without any issues. Maybe I will give it another shot later… It is interesting that this update seems to be rolling out so slowly to people.

 

How were you notified? Via the app? On the infotainment screen?

 

I tried again after a short drive to the grocery store and back. Car notified me of the update when I put it in park. Worked right away that time.

 

I had to take our Blazer in to get a tire patched and in the process they told me there was a recall for the heated wiper that needed to be addressed via software update. What was supposed to be a 5 minute process per GM took an hour.

 

I had my HV battery replaced and also software updated in early March 2025. Then yesterday my dealer called and said they wanted me to come in ASAP for recalls. I was free so I went in. They did the recalls for the

“N242468490: Service Update - Missing Chassis Harness Plug”

“N252492430: Service Update - Heated Wiper Park Inoperative”.

Oddly both the GM and NHTSA websites didn’t show those recalls applied to my VIN 🤷🏼‍♂️🤷🏼‍♂️

Repair was:

“K219 Lighting Control Module Control Function (Power Mode Off) - SUCCESS


K219 Lighting Control Module Programming- SUCCESS”

 

Nhsta site isn't being updated anymore as far as I can tell

 

GM has released a fix for the heated wiper park feature.

https://gmauthority.com/blog/2025/03/gm-releases-fix-for-inoperative-chevy-blazer-ev-heated-wiper-park-feature/

The 2024 Chevy Blazer EV and the 2025 Chevy Blazer EV are both included in a new General Motors Service Bulletin that describes a fix that has been released for an inoperative heated wiper park feature that fails to heat properly.

Notably, GM Service Bulletin N252492430 applies to the Heater Wiper Park (RPO code CMO) feature introduced on the 2024 Chevy Blazer EV, which is detailed in a GM Authority feature spotlight where you can read up on the technology’s specifics.

The heated wiper park is a defroster element in the base of the windshield. This heats up the windshield base and thus also the wiper blades when they are in the “parked” position, conserving their effectiveness in winter. In affected Chevy Blazer EV units, this defroster fails to properly heat the windshield base and thus the wipers in contact with it.

GM instructs EV-qualified dealership service personnel to carry out the available fix for affected Chevy Blazer EV units through the end of the crossovers’ New Vehicle Limited Warranty period. The fix is available free of charge to current owners. It requires no new parts or component replacement and consists of reprogramming the Lighting Control Module of the Blazer EV.

This reprogramming can be carried out OTA (over the air) or directly at the dealership.

 

I just had this done at the dealer. They called and requested I come in. Oddly my VIN wasn’t on the GM or NHTSA site for this recall 🤷🏼‍♂️

 

Why would a service action show up as a recall? Nowhere in the post does it state that it is a recall?

 

I just had this done at the dealer. They called and requested I come in. Oddly my VIN wasn’t on the GM or NHTSA site for this recall 🤷🏼‍♂️

Thanks for sharing your experience. I'm headed in next week for my 7500 mile service. I'm try to remember to ask for this.

 

Just got received our second OTA today on our 2025 Blazer EV RS AWD SuperCruise: GM N25-249243

( Sorry for the slightly blurry first pic )

 

Just got received our second OTA today on our 2025 Blazer EV RS AWD SuperCruise: GM N25-249243

( Sorry for the slightly blurry first pic )

When you tap on the update ...does it say what it fixes or improves ?

 

Interesting, didn't think to check the Release notes earlier but it looks like GM N25-249243 is (or includes) the Heated Wiper Park fix OTA from the recent service bulletin.

 

good to see these are rolling out, I still haven't gotten it.

 

Why would a service action show up as a recall? Nowhere in the post does it state that it is a recall?

yeah Im, not sure this is a recall and either way as I noted it appears the NHSTA site is no longer being updated by the government. There have been no new blazer bulletins since january

These aren't recalls. GM has the same internal update/numbering system as NHTSA for their internal service updates and TSBs.

If a Dealer is saying its a recall it's actually called a Customer Satisfaction Program for non Safety related updates.

 

How do these OTA updates happen, mine has not had a single update since November, and I have manually checked for them.

 

if you get it, you shouldn't have to manually seek it out. I've only had one- have not gotten #2 yet

 

I don’t know what to tell you guys on that. The dealer called (and texted) and literally said there were two “recalls” and they requested I come in the next day to take care of them as it was “urgent”. How would a consumer know the difference?

Why would a service action show up as a recall? Nowhere in the post does it state that it is a recall?

These aren't recalls. GM has the same internal update/numbering system as NHTSA for their internal service updates and TSBs.

If a Dealer is saying its a recall it's actually called a Customer Satisfaction Program for non Safety related updates.

 

I think this is really just dealers playing games so they can book those service hours for the reflash. I had a dealer hound me a couple years ago for an owner's manual supplement. They bugged me once or twice a week for MONTHS to come get this single owners manual page and book 0.2h of labor against warranty (billed back to GM, not me) for printing out a one-page supplement. You're exactly right, you would never know that it's anything other than a "recall" if that's what they told you.

 

I'm headed to the dealer in a couple of hours for my 7500 mile service. We'll see what they say about this.

 

So my service advisor grabbed his code reader and plugged it into the OBD port. He said he can't charge GM for the work if thete arevno codes. Sure enough, both issues showed up even though my car shows no recalls in the database. I recommend folks ask for this check if your dealer doesn't automatically address both items.

 

Just received the 2nd OTA update on a 2024 Blazer RS. One back in September 2024 now on April 2nd 2025.

 

Also got my OTA on April 2nd. Installed smoothly, no apparent issues after installed so far. Haven't really noticed any changes yet, but only driven couple times.

 

Interesting, mine showed that update in Feb (N25-F172AE), and another new one just installed yesterday (N25-249243). Should note year / model ('25 RS AWD).

 

you are the first person Ive seen with the 249243 update. I did see that equinox evs got an update for supercruise. Do you have a 2025? What does the car say the new update does?

 

I do have a 2025. I don't have a screenshot, but when I looked at the details it said it was related to improving the wiper heating. Mind if I ask where you saw the equinox ev update for supercruise? Do you know what it changed?

 

There is a guy with a channel called average ev and he has had an equinox for almost a year. He just said it noted software improvements to improve ability to take curvy roads etc

 

Came in yesterday, 2024 Blazer RS.

 

Good to see GM is pushing updates OTA again on the Blazer.

I’m assuming the version my car is running on, with the heated and cooled seats grouped together, will have to wait for a dealer to do the other updates before I can get this OTA update. Has anyone on the same version as me (sqbr4-126.4) gotten the update pushed to them?

 

Same version, have never seen an over the air. I still have one button for seat cooling/heaters.