I have a 2017 Colorado. love the truck but its having some pretty serious safety issues. it randomly shuts off while driving. its done this 4 times so far, all on different days. twice I've been going down the highway, 55-70 mph. Once when accelerating from a stop light. and once while pulling into a driveway. the dealership cant find anything wrong with it. no codes, nothing. the truck runs pretty well, it does seem to bog down just a bit, but not enough to be immediately noticeable. the truck can start up again immediately. and starts as if nothing happened. the dealership did a fuel treatment that they said would fix it but nothing. a few months ago i had it serviced for a p0446 code. shortly after service the light came on again with the same code then went off after a few minutes. this code is for the circuit for the evap system. I am thinking a few things. the fuel pump (but there's no code), the fuel filter (but there no code), and maybe the evap system again(but there's no code), others are problems I've seen with the 2015-16 that have computer related problems, but those haven't seemed to flow over into the 2017 models. I am trying to find the most likely possibility as these fixes appear to be expensive. I cant be the only one to have this problem and I am at a total loss right now.