DO I HAVE A MOUSE?
 

I HAVE A SQUEEKING NOISE THAT I THOUGHT WASTHE TENSIONER. THEN I THOUGHT IT WAS THE BELT. THEN I THOUGHT IT WAS THE COMPRESSOR PUMP BELT. THE I THOUGHT MAYBE THE IDLER. BUT I WAS WRONG.THE ONLY THING LEFT IS THE ALTERNATOR, H20 PUMP OR THE FAN. MY TRUCK IS A '00 GMC 1500 WITH A 5.3. ANY SUGGESTIONS?