Review on 🔧 Original Equipment Engine Coolant Thermostat by ACDelco GM, Part Number 131-158 by Daniel Steele

Works well for Chevrolet Malibu 2.4L 4 Cylinder 2010 onwards. I'll update this if it fails. A NOTICE. When your car starts and the temperature gauge drops to zero and the air conditioner starts blowing heavily, don't immediately think it's a thermostat. In my case it turned out to be a connector connected to the engine coolant temperature sensor (right next to the thermostat). It was broken and had no solid connection, had to put a new plug in and now it works great. Although if the connection looks good, it's probably the thermostat that's stuck open.