Please use this thread to report the newest updates for the Blazer and give as much info. on it as is possible. Also include any side effects that you encounter as a result of these updates.
Newest software updates & OTA's for 2025
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Chip
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App push notification. Went down to the car and it was in the updates section as well.
when it does come you should get notification in the app or the car, I believe when I got the October one I saw it in the car, not on the app.
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”
“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”
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413 Posts
GM has released a fix for the 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.
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.
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896 Posts
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.
Nhsta site isn't being updated anymore as far as I can tell
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
)
![Image]()
![Image]()
( Sorry for the slightly blurry first pic
)Attachments
When you tap on the update ...does it say what it fixes or improves ?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
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.
![Image]()
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58 Posts
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
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19 Posts
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 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?
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896 Posts
I'm headed to the dealer in a couple of hours for my 7500 mile service. We'll see what they say about this.
if you get it, you shouldn't have to manually seek it out. I've only had one- have not gotten #2 yet
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