Thanks for the answer. The in dash gauge is a stock temp gauge (100-212) correct for the truck. The thermostat is a 180. Everything seems to be working. I still cannot see the thermostat open with the radiator cap off. I do get plenty of heat in the cabin and I haven’t had an overheating problem. However the dash temp gauge won’t move. I installed a new gauge. I could have gotten a defective gauge.
