Water pump replacement

Hi , I need some guidance on how to get to the water pump and removal also replacing thermostat . I just purchased the vehicle runs very strong but I did notice the belts squeaking on start up and while driving . I’m not sure wich belt it is yet as there’s 3 belts on here but I saw the alternator belt in bad shape . I did check the coolant it was quite low and as I drove it for about 30 to 45 mins I notice my ac got warm and temp came up on the cluster so I opened the hood and sure enough I can here bubbling in the hose and in the return tank of the coolant . So I purchased some coolant topped it off . So far idled roughly 30 mins temp seems to stay steady in the middle .i picked up a code PO327 but i don’t suggest that’s the problem here . I’m thinking water pump or thermostat . Also I’m not familiar with this year and model but does the timing belt or chain have to be removed as well to get to the water pump ? Need some help thank you .


Note: fan is blowing and I have not notice or detected any leakage . After adding coolant and idling for 45 mins coolant level remains . I did open up cap while vehicle was running and there is circulation wich therefore maybe it’s not the water pump idk .