Alternator Bearing

[FightingIrish]

Did a quick search and couldn't find much in previous threads, so thought I'd throw this question out there.

During my safety when we transferred the car, the mechanic pointed out a humming noise, which he has since identified as a failing alternator bearing.
Thankfully less than an hour to replace the alternator once he gets it in stock, but my question is whether the failing bearing is the problem or a symptom of a larger problem? If something was out of whack (very technical terminology) would it cause uneven belt wear leading to the bearing failure? In other words, do I need to look deeper than the alternator?

Thanks!

 

[Riley P]

I really doubt you have to look any deeper than it simply being a worn alternator. GM's alternators have been getting better (I think I put 3 alternators on my old truck over 15 years), so 19 years is pretty decent for it to be working with belt tension on it all this time.

 

[Rruuff Day]

I agree with Riley, and in doing so will also give a kudo to your mechanic. Way to often a lot of mechanics now-a-days would have said; "Yup. Thats' the alternator making that noise. You need a new one"

 

[FightingIrish]

Got around to having the alternator replaced, and now I'm getting a "charge system fault" on my DIC.
Replaced again with second new alternator (both AC Delco) and still the same.
System gauge reads 14+ volts, so its definitely charging...the DIC just doesn't like the new alternator.
Anyone ever run into this?