Discussion Starter · #1 ·
I have a constant sqeak coming from my 2003 6.0 Serpentine Belt Pulleys... I replaced the tensioner assembly last summer along with a new Power Steering pump a few weeks ago, so am assuming they aren't the issue. I'm leaning towards changing both upper idler pulleys, but need the part numbers to identify them.. Anyone have schematics or an ID chart for part numbers...?