I have been getting a sloshing sound from passenger side dash. I bled the coolant fluid, refilled, and it halts the sloshing temporarily. However it tends to come back days later. I only seem to be leaking a little coolant. Gaskets were replaced a year ago. What should my next step be?

 

Take it to a good mechanic, not the dealer, and have a coolant pressure test done to find the leak.
Do it ASAP before you toast your engine and get back to us with what is found and the estimate so we can help you.