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2007 chevy trailblazer_lt
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19 Posts
Discussion Starter · #1 · (Edited)
I replaced the alternator because it was charging way to high and now my battery keeps dying. I had the battery and alternator test at Advance Auto Part and was told the battery was good just needs to be charged and the new alternator is charging at 15.5v and my battery is still going dead. What do you guys think the problem is?

2009 Tailblazer LT 4.2 4x4
New Alternator
Battery is about 3 years old
 

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2004 gmc envoy_slt
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18 Posts
I replaced the alternator because it was charging way to high and now my battery keeps dying. I had the battery and alternator test at Advance Auto Part and was told the battery was good just needs to be charged and the new alternator is charging at 15.5v and my battery is still going dead. What do you guys think the problem is?

2009 Tailblazer LT 4.2 4x4
New Alternator
Battery is about 3 years old
Replace the battery.
 

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2003 isuzu ascender
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13 Posts
What do you consider "way too high" for charging?

If AutoZone tested the battery, said it was good then said it needed a charge because it was low, I'd say they don't know what they're doing.

What kind of battery is this? I'd agree, it's bad and needs replacement.
 
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