Webb07

The speeds vary when it shuts off. One time it was going 60mph another time 30mph another time 20mph. There is no rhyme or reason to why it’s doing it. So far they have put a new transmission in it, a torque converter, fuel pump, new censors, and check all the ground wires. They have hooked it up on the code reader and the problem is the only codes that it shows will be different each time and when the truck turns itself back on after kicking off the codes disappear and so does the check engine light. When it happens the lights flicker, the doors unlock, the dashboard handles drop, and it makes a dinging noise. And within a few seconds without me doing anything it kicks back in.

I have a 2010 Chevy Silverado 1500 4wd. It started about two months ago I was driving on a highway and suddenly the truck died gauges cut out the power locks clicked and the truck dinged within a few seconds it all came back on. I have had it to 3 different garages and $1500 later the problem is still not fixed and no one can tell me what is wrong with it. Any ideas?