2017 Denali, at 62k injector 7 failed. at 72k injector 4 failed. With the milage I am well out of warranty so its being repaired again at the local diesel shop. I am on the road hauling with the truck 40+k a year. My confidence in my next haul is very ow. Is this something I am going to be nervous about every trip I make. We are looking at the wire connections today as well as that has been noted as possible part of the issue. Do I trade it in?