Whine coming from somewhere!
Truck is at dealer and they are "going over every moving part" with stethoscopes looking for a mysterious whine that has popped up. Truck is a 2004 Silerado LT3 1500 ext cab 2wd. 253k miles. New e...
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Sounds like a pinion bearing in one of the diffs! Probably rear, unless you have AWD, then possibly a front. Pinion bearing noises come and go like that when you are on and off the gas. And with that kind of mileage it is very likely the problem!
