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Old 02-11-2011, 10:14 PM   #2
slo99sierra
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Re: Strange Noise from Trans OR?

Alternator will whine when it's on it's way out. But being it seems you pin pointed it towards the trans, I'd say the Torque Converter.
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1999 GMC Sierra RCSB 4.3L V6 overall stock plus some exterior and interior work.
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