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AR15.COM
8/27/2008 6:50:53 AM EDT
I have a 2001 2wd chevy s-10 automatic with the 2.2 4cyl. My voltage gauge is dipping to around 12v at stop signs and I am hearing a whirring noise. When I start to get going, sometimes i am getting hesitation, but once I get going, the voltage is getting up past 14 again. My first thought is alternator. I am at work and I will head to autozone when I get out and get it checked. Anything else it could be?

Edited: forgot to add, only 61,000 on the clock
8/27/2008 7:33:50 AM EDT
[#1]
Sounds like an alternator issue to me.
8/27/2008 7:44:21 AM EDT
[#2]
Alternator. Buy a good one, my friends in his 98 s-10 died the same way, only he was driving back home and by the time he got home the truck died because the battery did. he replaced it with a rebuilt cheap one and 2 weeks later that one died.
8/27/2008 5:57:15 PM EDT
[#3]
I agree, sounds like an alternator biting the dust.

GM vehicles for whatever reason are finicky about electronics, don't skimp here.  It won't be cheap, but I strongly recommend an AC Delco part.  Most anything else, I can about guarantee you're going to have to replace again within a year, if not sooner.

ETA - And don't forget to test your battery and charge/replace it if necessary.  A weak/bad battery can overtax and damage an alternator as well.