Ok I take the Ascender into a GM dealer for the famous whining sound. Yes I know I should have done this myself. So they come back saying it's the fan clutch and they went down that rat hole. So they replace the fan clutch and they punctured the radiator while at it and had to replace that also. So I get it back drive it and the whine is still there which ticked me off . After about 2 days of listening to that I went and bought a breaker bar and a new idler pulley and replaced it myself and guess what whine is gone . The problem is now that whenever it's started when cold now the stupid thing sounds like the proverbial jet taking off which means the fan clutch is fully engaged , so is the fan clutch they put in bad out of the box and should I go after them to replace it again ? Eventually after about 4 minutes of listening to this and driving it does seem to go away or at least not as bad and you have what seems to be normal acceleration again. I'm also afraid this will have an adverse affect on the already mediocre mpg . I'm not all that mechanically inclined so the fan clutch is over my head to do anything with .