I just changed the serpentine belt on my 2000 Tundra. It had been squealing for a long time and I finally got around to doing it. Mine cost me about $28.00 from Advance Auto Parts. My local Toyota dealer wanted around $50.00 for one. Its a fairly easy job to do but frustrating if you try and do it yourself. Get someone to help by pulling on the tensioner (I used a breaker bar with a 14mm socket and short extension) while you thread the belt on. You may be able to replace it without doing...
tundra serpentine belt
tundra serpentine belt