Originally Posted by padgett
For some reason the Bonneville 3800 eats alternators. Maybe that'* why GM made it so easy to change.
OTOH the Bonneville uses a small diameter alternator (why you can run the plug wires under it). My other 3800s have a large diameter alternator that seems to last for quite a while.
I wonder if ACDelco lasts longer? My lower mileage Bonneville still has the factory alt, Wife'* with 193k oughta have quick release fasteners on it. Changed it in a shirt and tie one time
Autozone cheapies. Last one was a used GM one from Ebay, seems to be holding up well.
Edited to add, at the same time I installed said used GM alternator, a new battery went in and before that new battery even got hooked up, I charged it with the setting at 2 amps for a few hours beforehand, after reading here that sometimes a weak battery can kill an alternator, and vice versa. Just a Wal Mart battery but hey, whatever works.