Coolant issues

I have an 08 Tundra SR5 with the 5.7 (amazing truck) but I'm having issues with my coolant system
To start I have no heat or AC and the dash has flashing VSC OFF, 4LO and solid traction slip light

Iv had these lights before when my last radiator went out 2 years ago. I replaced the lower hose and thermostat as those were old and I hoped it would fix the issue. However nothing changed. The overflow tank on the radiator is overflowing and dumping coolant from the pressure release hose on the lid...next step is replacing the water pump and radiator because it seems like it's not circulating and building up too much pressure? Any advice?

 

Serpentine belt or tensioner, could cause some of that, water pump wouldn't affect ac. Sounds like you could have multiple issues.

 

Did the rubber of your radiator cap come of and blocked your thermostat ?

 

Update:
Cleared the codes and finally got the air out of the system. I miss judged the source of the coolant, it's actually leaking from the water pump, ordering a new one and replacing it (AC, heat works and lights are gone

 

Glad you figure it out.. post some pictures if you have them so we can see what you were seeing and then know what to look for when it happens to us.