Guessing it’s a coolant valve issue?
Picked up my new to me ‘24 Flash last week. By day two I started getting the yellow wrench powertrain warning about 50% of the time I drive. There is no loss in power or anything else as far as I can tell. What I did start noticing is that when it happens my motor temp starts to rise. It never gets above any threshold or faults out. It just runs around the 75% mark as opposed to the middle 50% line where it normally sits.
Has anyone else dealt with this? I’m assuming it’s a coolant diverter valve issue and an easy fix. Fingers crossed.