3.0 GS PWTR, I HAD THIS SQUEALING NOISE COMING FROM MY CIRCULATION PUMP BELT RUNNING TO ALTERNATOR IT GOES AWAY AFTER 10 SEC.AFTER STARTING, I REPLACE THE PUMP ABOUT A YEAR AGO,I CAN RUN THE ENGINE WITHOUT THE ALT. BELT AND SQUEALING GOES AWAY,I REPLACE THE BELT AND ALT. AND STILL HAVE THE SQUEALING, I REMOVED PULLEY FROM CIRCULATION PUMP INSPECTED ON PROBLEMS PUMP TURNS FREE WITH NO LEAKS, NO RUB MARKS, ON PULLEY.
