Joemahma

Hello, all. I found this forum looking for the same issue that happened to me today. i have a 2020 sierra denali with the 6.2. I was slowing at a light and as soon as I came to a full stop the truck jerked and everything went blank. no power to anything. no hazards nothing. it was rush hour and everyone was blasting their horn blah blah blah.. anyway. (oh no onstar since no power) I got the dealer on the line and they came and dropped off a loaner and had the truck towed to their shop but it was late so they will look at it in the AM. I suspect the battery issue too or the ground terminal mentioned in another post but I have only had it 3 days. 200 miles and only 50 of them are mine.. anyway, the tow driver tried to jump it so he could get it out of gear and nothing at first then he used a different jump pack and the lights kicked on but still not enough power to start it, at least he got it out of gear so he could put it on the truck... Its a lease, I traded my 2017 sierra denali lease in for this. the 2017 never had one issue. I hope I dont have trouble with this thing, I am scared to drive it any distance out of fear it will do it when Im far from home or on the highway.. I had no lights or power brakes, steering no brake lights, no hazards it was completely dead, if that happend at night on a busy road It could have caused an accident.. scary stuff.