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Old 07-21-2015, 10:55 PM
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02 yukon charging system issue

Need some help guys. 02 yukon. Batt light came on, changed battery and alternator tested bad.. changed it too. Now I have an intermittent batt light flashing. I went to the parts store to retest the alternative and it tested good. They thought maybe a loose tensioning pulley. Changed that but no effect. Light is still flashing. I have triple checked all the connections and cleaned the grounds, all didn't help at all.

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Old 07-22-2015, 12:42 AM
jk13 jk13 is offline
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Engine to chassis ground strap?
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Old 07-22-2015, 03:15 AM
Fullpass Fullpass is offline
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I had changed an alternator on my 03 Chevy Silverado. The alternator came with a bulletin in the box that said the code in the vehicle may half to be reset...Sure enough I had a code something like charging system..Autozone wouldn't reset it, but Oriley's did, they reset the code for me..my rpm was fluctuating couple hundred rpm up/down. Reset code on vehicle...held steady.
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Old 07-22-2015, 07:56 AM
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Quote:
Originally Posted by jk13 View Post
Engine to chassis ground strap?
Gave that a go already and it didn't help,

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Old 07-22-2015, 07:57 AM
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Quote:
Originally Posted by Fullpass View Post
I had changed an alternator on my 03 Chevy Silverado. The alternator came with a bulletin in the box that said the code in the vehicle may half to be reset...Sure enough I had a code something like charging system..Autozone wouldn't reset it, but Oriley's did, they reset the code for me..my rpm was fluctuating couple hundred rpm up/down. Reset code on vehicle...held steady.
I go have a code reader I will give it a try, thx

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Old 07-22-2015, 10:14 AM
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The Code reader didn't pick anything up, the internet tells me that the battery light itself doesn't code on these models until the engine starts to lag.... and then it will be other codes about missing and such.
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Old 07-22-2015, 11:38 AM
Wakerider16 Wakerider16 is offline
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All your connections good on the alternator? If you haven't already maybe put some di-electric grease on them to see if that helps.
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Old 07-22-2015, 02:04 PM
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Originally Posted by Wakerider16 View Post
All your connections good on the alternator? If you haven't already maybe put some di-electric grease on them to see if that helps.
I will swing by and get some today, was thinking about changing the connector as well. And the belt

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Old 07-22-2015, 06:38 PM
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Goo did not work

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Old 07-22-2015, 06:44 PM
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clrussell clrussell is online now
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I'll come back to this later for some help. I just saw it


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