Cadmanad

My 2018 GMC just did the same thing, started the truck with remote, let it warm up until it shut down, went out started it with key, drove into town, about 5 klicks. Went did some shopping, about ten mins. , came out and truck would not start. Reduced engine power icon on. Tried it a few times, just rolled over but would not start. I checked the manual to see what the message meant, about five mins. of reading, tried it again and fired right up. Check engine light is on, haven't checked the code yet, but truck ran good all the way home. WTF, the truck only has 48,000 klicks, not impressed.