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Always hummed. But there's a new loud squeaking noise. on 2002 Chevrolet Trailblazer

I bought an '02 Trailblazer back in September. It has always made a loud humming noise when I rev up the RPM. However, it has only just started to make a very loud squeaking noise when I accelerate, at any speed or RPM. My dad looked at it and believes the problem to either be from the fan clutch or the water pump. There is a bit of more movement in the fan than I think there ought to be. Anyone have any ideas?

Asked by for the 2002 Chevrolet Trailblazer
while watching fan turn with car running turn car off the fan should stop in 5 seconds if not most likely bad
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1 more answer
turn your radio up louder, you won't hear the noise...