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2005 4WD Trailblazer started making a high pitched whine that gets louder as you accelerate the noise is definitely coming from the engine you have been told it could be the idler pulley bearing?
Wiki User
∙ 16y ago
It could be, try shooting it with some wd40 and if it changes pitch or stops it probably is.
Wiki User
∙ 16y ago
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