Water Damage - GPS Trouble

Fell into water with my phone, back panel released itself so I then replaced the full camera module which has worked perfectly since and cleaned all the boards off with Iso Alcohol. since this incident, my phones GPS has been very off. pings me across the country randomly or out to sea. wondered if there is a direct GPS chip that I can replace or if anybody has had the same issue. everything else on the phone is working perfectly still (over a year ago now) tia