r/Chevy • u/Several_Fishing_3533 • 1h ago
Discussion Chevy 5.3 overheating
I’ve been chasing down this overheating issue for weeks now. I have replaced the thermostat, and it seemed to put a Band-Aid on the fix, after about two weeks, it started overheating again I replaced it with a Murray 182° OE thermostat , I replaced the water pump thermostat sensor. Had to pull the heads off and get them resurfaced. Got all new gaskets they said my heads were warped, flushed the radiator burped the system, installing another thermostat, replace the serpentine belt, replaced the belt tensioner (I heard that could be an issue too) started the truck back up and it’s still overheating
During this process, I turned the heater on and it was blowing cold air at 90°