2026 Sierra SLT 3.0 Duramax Auto Start/Stop not working?
I have auto start/stop on for my truck and in all honesty its only worked the first week I bought the truck and that's it. I've turned off AC and everything and test drove the vehicle, auto stop doesn't kick on. DEF full, fuel filled and etc. Point being should I take it back to the dealer to get it troubleshot or just thug it out?