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LS1 alternator problems

This is a discussion on LS1 alternator problems within the General Help forums, part of the LSx Technical Help Section category; good for you schmack i hope it stays fixxed and you have no more problems . on a lighter note ...

  1. #41
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    good for you schmack i hope it stays fixxed and you have no more problems . on a lighter note i smoked a mercedes amg yesterday on a 60 mph punch . gee i love the LS it truly is touched by the hand of God!!

  2. #42
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    Quote Originally Posted by oldmano2z View Post
    good for you schmack i hope it stays fixxed and you have no more problems . on a lighter note i smoked a mercedes amg yesterday on a 60 mph punch . gee i love the LS it truly is touched by the hand of God!!
    yea tell my about it its alt number 6 lol. good job on that amg

  3. #43
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    2002 TA

    Quote Originally Posted by Cutlass View Post
    I think the L terminal should have 12 volts from the PCM. Maybe you have a bad PCM
    Correct. The L terminal is used by the PCM to turn on/off the alternator.

  4. #44
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    1999 LS1 Transam

    Im having a similar problem with my car. Any ideas on why my alternator willnot charge my battery? Ive been to three shops my back is against the wall, Ive replaced the car with a brand new computer, alternator, and battery yet my car will not charge!!! Any Ideas would be greatly appreciated

  5. #45
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
    98 T/A w/a little mods...

    Is the single wire connected on the top side of the alternator? Most ppl miss it or break it when they swap the alternator.


    There is a single wire that connects to the pcm. If not connected it will not charge the battery.

    Now if the wire is broke there is a thread on how to fix it in the Tech Stickies.


    Any questions on that thread just pm me, I wrote it.

  6. #46
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    the wire is connected on top of the alternator..Whats my next option could the alternator have blown again?

  7. #47
    Spaz is My Mentor SMWS6TA's Avatar
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    Navy Blue Metallic
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    Is it a re-manufacture?


    May be specially if it is from AutoZone.

  8. #48
    Moderator Cutlass's Avatar
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    Quote Originally Posted by Vettekiller24 View Post
    the wire is connected on top of the alternator..Whats my next option could the alternator have blown again?
    Here's the Sticky SMSW6TA is refering to: A Fix if You Break your Alternator Wire Plu

    If thats not your problem then you might have to run a new wire between the alternator and PCM. That wire could be broken/open somewhere

  9. #49
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    thanks ill try to look real hard and yes I bought the alternator from autozone. I might just go swap it out because its in warrenty? The wire that runs from the pcm to the alternator is that one red wire correct?

  10. #50
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    dark grey
    2007

    Good day guys.
    I wanted to share with you a new website for ordering replacements parts and repair kits for your cars alternators or starter motors. You can buy all replacement parts for alternators and starter motor i.e regulators, rectifiers, brushes, brush holders, bearings, solenoids, gears, bendix, tools and many more all in one place at "saverepair"
    You can easily find any part you looking for by entering your parts serial number in search box, this will bring up all the suitable parts for the part.
    Last edited by SMWS6TA; 11-14-2016 at 07:45 AM.

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