Don't know yet, this morning for the first time my engine turned over as if my batteries were drained, I attempted twice to start and finally it turned over normal and it started truck drove ok for about 5 miles and all the sudden load dry swoosh noise from passenger side engine, could not pin point and then it went away. Got home ok, shut down engine and tried to restart, no luck, back to the same drained battery feeling, tried. Again and it started with loud squealing noise, shut engine off ...... no check engine light.....