already replaced one
Chevrolet Q&AAsk Your Question
2002 Chevrolet Trailblazer Question: is this a fan clutch problem? http://www.youtube.com/watch?v=00Y-7q7N_5Y&feature
Answer #1Greg's Orange Auto (13428 Answers) , Orange, CA - (714) 361-9386globalhelper January 11, 2013, 06:31Master
seek diag and est
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.