Markbburg

Well that wasn’t it! Today same shit, no crank no start did finally get dash to come to life and stated low bat. Theater bat and all is good so disconnected negative for 10min hooked back up and it started right up no problem. Ugh $420 a week ago for nothing! Next project for me will be tear apart the dash and check the 218 ground as I’ve seen a few people find issues and fix this ground and had no issues yet. I’ll update after I get time to try this fix.

SO this happend to me with my 2014 Sierra I bought used 4 months ago. I had to have it towed to a shop and of course for them it started right up however I had the battery negative off because while trying to start and jump my truck I found the negative was extremely hot. The shop hooked up battery and could not duplicate the issue, however they found a service bulletin about the BCM software being out of date causing no start no crank no power issues. I had them update the software today and will see how things go as of now picked her up and everything is fine here is the link for the bulletin https://gm.oemdtc.com/7614/13257-service-update-for-inventory-and-customer-vehicles-bcm-communication-error-reprogram-bcm-2014-chevrolet-silverado-gmc-sierra I hope this info may help with the many posts I’ve seen describing this issue!