Noise and/or Dead Battery Due to failed Alternator on Chevrolet 1500 Pickup

The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.

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Average mileage: 130,928 (58,500–236,000)
Engines affected: 4.3L V6, 5.0L V8, 5.7L V8, Gasoline
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
24 people reported this problem
8 people shared problem details
I had a terrible noise when I first started my truck, then it seemed to fade away. Came back again within a drive or two. Dropped it off for other service and they told me it needed a rebuilt alternator, since the bearings were gone in mine. In my mind, a vehicle of this age is bound to have things like this come up. I feel like I have an excellent service garage taking care of my vehicles now, so, I'm just reporting, not complaining. My battery is fine! Dec 12, 2014
1992 Chevrolet 1500 Pickup- 5.7L V8236,000
replaced alternator and starter and pulley
1997 Chevrolet 1500 Pickup- 5.7L V8165,000
Rattling noise then the battery check light turned on, rattling only subsides with gas.
Alternator stopped charging battery. Replaced alternator with aftermarket high output alternator.
I'm on #4.The first one was still under warranty,the next 3 out of my pocket.The front bearings seem to be the problem.All 3 have had the front bearings go bad.
If I remember correctly,the first time was at 220,000 miles and then I had new brushes put in the alternator. That lasted maybe 50,000 and it went down again. Then I swapped the original alternator for a new delco at Autozone with warranty.I think this was the last time I replaced it and now I have over 250,000 miles on this alternator and still working good.
battery goes dead while driving vehicle. i have new alternator to put on. where do i find tension bolt to loosen belt?
1996 Chevrolet 1500 Pickup- Gasoline90,000
Alternator froze and destroyed belt as well.
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