On Sunday (5 days ago) my truck just died while my wife was driving about 80km/hr after picking up the kids. She coasted to the side of the and called me. I thought it was going to be something silly like batter in key going dead, sealtbelt, or something like that. But I got there and pushing the start button just made the truck turn off. Pushing it when it was off, just make the accessories come on. All electronics seemed fine. There was no warning lights or anything prior. The truck had 55,000k on it, so I called roadside assistance and had it towed to the dealership.
The dealership has had it since Sunday, and still have no idea what is wrong with it. They have phoned me twice to ask me more questions about it. They replaced the starter, fuseblock, and battery... which made no sense to me. It has never had trouble starting, and all electronics were fine, and there was never a voltage warning. The fuseblock maybe... I would have thought with all the electronics on that truck, it would basically self diagnose itself. The funny thing is that the myGMC app is reporting the vehicle with no warnings or alerts, other than one tire which needs air.
The truck has always been a little flaky, I have had the ABS just randomly stop working a few times during cold weather when I got it, but a firmware flash fixed that. Once a weak I will get a warning on the infotainment system that the SD card has been removed when it hasn't. Sometimes when the infotainment system starts up the GMC logo display while it loads is garbled. I have had the 'timer' on the dash console freeze up the entire dash console. But this is my first GM/Chev I have owned, so I am not sure if that is just par for the course with them, or if it is linked to the issue I am having now.
Looks like I am going into the long weekend with no vehicle. Dealership won't do loaners due to COVID and vehicle shortages. Though I am expecting a call back from the manager, and I am going to discuss my options. The group owns 5 dealerships, they can find me something, and bill it back to GMC. This isn't the dealership I bought the vehicle from, as I have moved since buying it, but they should still step up, I mean they are just going to bill GMC for everything.
Anyway, enough whining, has anyone had something like this happen to them? What was the cause?