1994 Z-71 350 auto. Just recently my alternator started whining ,it charges fine just noisy. Does this mean it's on it way out and can it be quietened any?

By the time pulleys are whining they are typically on their way out.
Great year for thet truck by the way. I'd love to pick one up.
Trevor - Huntington Beach, CA
2007 GMC 2500 4X4
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