Just had the same exact thing happen to me. Now I'm going to be unable to use my truck until this is fixed?? Of course it's 630 now and all the support is closed. This is very frustrating

Just to let you know, I've had to send my ECM in TWICE for this issue. After the second time I returned the ...

I also have a 2014 Silverado 5.3. Got my tuner in TODAY installed tune for the first time after it got updated on my computer to the latest version. Drove great but wanted to test out different tunes. Reinstalled factory tune, then tried installing a different tune. At the end of the install it said ...