3mos ago i had a fender bender in Mesa,AZ(my front end to pasenger side)her car was towed my wasn't for the next 28 days my truck was still driving just fine like nothing ever happened to it,at the end of the month my work was done so i drove bk to Cali and it was till the middle of April when this all started 2 months ago like normal I was getting an oil change from there I went home it was 5:30pm didn't go anywhere else that night ,the next morning I put my key into the ignition and it was completely dead, at first I thought it was the battery so I bought a new one, installed the new battery went on my way to run my errands 3hrs pass came home it was around 12:40pm,around 5:30pm I was planning on going to the grocery store went to start my truck wouldn't start truck battery was dead, nothing was left on no door was open no lights were on, so I towed it to my mechanic so he could put it on the scope to find out the general problem,called and told me that it was an electrical problem and my truck would have to be reprogram starting from the main chip in my transmission, going back in forth from my mechanic to the Chevrolet dealer in Victorville ca, it's still not in working condition yet and still trying to reprogram the last of these codes that keep appearing on the dash(2016 Chevy Silverado 6cyl 4door LT, never had any problems at all from the day I got it from the dealer back in 2019 of Mar, with reg oil changes, tune ups, ran like a brand new truck, very confused, upset,