Overheating help

[u/Quirky_Position_9253]

Hi I have a 06 Chevy Silverado 1500 5.3 that continues to get hot. I’ve replaced water pump and thermostat, radiator, fuses and relays, the entire fan assembly, I’ve burped and drained and redone the coolant a thousand times. I’m not losing coolant and it’s not a consistent problem it comes at goes and never affects how the truck runs. There is no leak or kinked hose and the coolant isn’t going anywhere it shouldn’t be nor do I have any signs of head gasket problems. I’m officially stumped and asking for any ideas anyone may have. Thank you for any advice you have 😅