2002 Chevrolet Trailblazer Q&A

2002 Chevrolet Trailblazer Question: is this a fan clutch problem? http://www.youtube.com/watch?v=00Y-7q7N_5Y&feature

already replaced one -
Answer 1
seek diag and est -
Answer 2
On a noise like that I would generally us a stethacope to pinpoint. Might try removing belt and inspect all idler bearing and inspect all pulleys. Check front balancer crankshaft bolt. -