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Ro White

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  1. Ro White
    Thanks for the link I’ll open one as well.
  2. Ro White
    2021 AT4 1500 had this happen at 127miles. I had to disconnect the negative terminal on battery for 2hrs to reset the system, that “fixed it.” Now it’s happened again at 400 miles. This time I waited two days and it hasn’t fixed itself yet so i just disconnected the battery again. Both times I experienced this I used the GMC app to remote start the truck before leaving work. I don’t always use the app. Not sure if it’s related or coincidence. Has anybody found a permanent fix? I’ve read this has been a known issue since 2019. Surely GM has a firmware fix for this by now?
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