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It disabled my front camera and then I damaged the car pulling into the garage with no camera. The brakes felt weird like they did the last time this happened. Just my luck!
I don't think GM will cover that under warranty, even though none of this would have happened if my battery didn't die because of the update.
Common suggestions when you want to install an update is to put the driver's window down and to plug in a smart charger before starting the install. The first gives you somewhat easy access to the battery (via the mechanical pull under the dash near the brake pedal to open the frunk) if it dies and the 2nd reduces the chance that the battery will die. Before doing the update install the car is supposed to check that the battery is at least at 70% of full charge.
My last 2 updates on my '23 took ~5 min....I would think if it's taking an hour then something is clearly wrong, and you should keep an eye on battery levels!
I'm surprised you haven't had any updates yet? My '23 C8 is 7 month old...
How are you notified of the update? I’ve looked on the app and haven’t noticed anything in the car.
Thanks, I have nothing. Apps says “your vehicle is up to date.”
I believe there is a setting to allow your C8 to automatically download updates... My first update was to allow / permissions to receive future updates and my 2nd update was to fix bugs in BCM, TCM, and TCP...
If it makes anyone here feel better (misery loves company), the Chevrolet Colorado and Silverado are also suffering from dead batteries from updates. Seems GM cannot get a handle on it.
I haven’t needed an update yet after 6 months of being built. My question is does the updates take about an hour? If something goes wrong does it keep trying to update and this is what drains the battery? I don’t understand the dead batteries part of the update equation.
Yep, my MO is don't worry about the GM maintainece changer it does not put out enough current BUT go back after and hour and be sure it took (See RKCRLR's posts.) If not don't try again until you drive the car for ~30+ minutes to get the battery fully changed (well to 80% as that is all the computer will let it charge as there is an energy saving mode (like many cars have today.)
No one, including apparently GM, know why the dead battery! It obviously is not going back to it's very low parasitic current draw of like 15 milliamps.
It seems like most all of these "bricked" car accounts after updates happened when people hit the update button and don't check within a reasonable amount of time after. I've had 4 updates down-loaded, and 2 of them failed on the first try. The car will display that failure message, and should still start.
On my two first-time OTA failures, I simply started the engine, hit the update button again, and the car instructs you to shut off the ignition when it's ready to proceed with the update. It should then install in 5-10 minutes max.
In fact, I now start the engine before an update, and follow that same procedure. All 4 update attempts initiated with engine running have been successful.
Lastly, DO NOT start an OTA update process unless you have time to come back and check the car in 15-30 minutes after hitting the update button, and then if it is not successful, intervene as I described above.
Words of wisdom from @Foosh that everyone doing OTA's should follow. This is exactly how I do mine. Five updates now, a couple failed one or two times before completing successfully, never had one kill the car. I might add that I do them with the frunk open "just in case".
It seems like most all of these "bricked" car accounts after updates happened when people hit the update button and don't check within a reasonable amount of time after. I've had 4 updates down-loaded, and 2 of them failed on the first try. The car will display that failure message, and should still start.
On my two first-time OTA failures, I simply started the engine, hit the update button again, and the car instructs you to shut off the ignition when it's ready to proceed with the update. It should then install in 5-10 minutes max.
In fact, I now start the engine before an update, and follow that same procedure. All 4 update attempts initiated with engine running have been successful.
Lastly, DO NOT start an OTA update process unless you have time to come back and check the car in 15-30 minutes after hitting the update button, and then if it is not successful, intervene as I described above.
Good idea, but still may not work out.
It really seems that the battery STATE OF CHARGE when the update starts is the biggest factor.
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