Hi guys, I need help. I’m working on my late husbands truck and I’m having an issue with the gauge, or the coolant temp. It’s a 97 Silverado k1500 5.7 Vortec, engine powered fan. I replaced the temp sensor on the drivers side block Becuz the dash gauge didn’t work, I replaced the thermostat with a 195, the temp sensor by the thermostat housing as well. I also had to put in a new heater core Becuz it hasnt worked in yrs. I also flushed the coolant. I wasn’t able to find the drains for the block though. I did run water through the radiator and heater core hoses till it ran clear though. In and out of both heater core hoses. Burped everything. Gauge now works but goes 3/4 hot. I used laser to shoot on the engine and radiator and got number all over. Radiator was 80’s. Thermostat housing was 170 ish, directly on the temp sensor on the drivers side was 245. Right next to that was 260 and exhaust head was 350’s. I can’t for the life of me figure out if my engine is ok and the gauge is bad or if the engine is running that hot. Please help me.