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Thread: pulsing lights

  1. #1
    TA Nut BlackTAWS6's Avatar
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    Black
    2002 Trans Am WS6

    pulsing lights

    I hardly ever use my headlights (once every few months). This morning I noticed while driving to work that my lights were pulsating. They weren't completely turning off/on but they were getting slightly dimmer, constantly. It was doing this while I was going 70ish mph. Not so noticeable while at a stop light.

    Anybody know whats causing this???


    Thanks,
    2002 WS6 M6, SLP Intake, MAF, Strut Tower Brace, Borla Exhaust.

    Billy J.

  2. #2
    That guy thearborbarber's Avatar
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    White over Red
    1991 Suburban

    Some of the diodes have croaked in the alternator.

  3. #3
    TA Nut BlackTAWS6's Avatar
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    so, does that mean my alternator is going out soon?

  4. #4
    old timer blue02Z's Avatar
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    2002 Z28

    well if he is correct than yes. alternators have rectifying diodes in them to convert ac to dc voltage

  5. #5
    TA Nut BlackTAWS6's Avatar
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    sucks then. what kind of replacement should i get? should i just go to autozone and get an oe replacement or upgrade? if upgrade what kind? would rather replace before it leaves me stranded one day.

  6. #6
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    Quote Originally Posted by BlackTAWS6 View Post
    sucks then. what kind of replacement should i get? should i just go to autozone and get an oe replacement or upgrade? if upgrade what kind? would rather replace before it leaves me stranded one day.
    Stay away from remanned units.. Buy a new one.. Just my .o2.. I think there's a write up floating around were a truck alt was used as an upgrade.. Good luck..
    :\Users\Steven\Pictures\d6ftg5nh.gif


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  7. #7
    Junior Member
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    Black
    1998 Trans Am

    My 98 has done this intermittantly since I bought it with 19,000 miles on it 10 years ago. Still does it to this day, But it's only once and a while.

  8. #8
    Member 20ws6speed01's Avatar
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    blue
    2001 WS6

    have ur battery & charging system tested...maybe a parts store can do it ??

  9. #9
    TA Nut BlackTAWS6's Avatar
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    will have someone check it out.

    battery is about a year old so I would "Hope" that it is okay still. but would rather it be the battery because its still under the warranty.

    but would it even be the battery? oh well, i'll just have them both tested.

  10. #10
    Senior Member 2001camaroSS's Avatar
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    Light Pewter Metallic
    2001 Camaro SS

    i am assuming you don't have a crazy stereo in the trunk or anything right?
    2012 Regal GS

    2004 Cadillac CTS-V (Sold)
    2001 Camaro SS (Sold)
    1999 Camaro Z28 (Sold)

  11. #11
    TA Nut BlackTAWS6's Avatar
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    lord no. i hardly ever even turn the radio on.

  12. #12
    Senior Member Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by BlackTAWS6 View Post
    but would it even be the battery? oh well, i'll just have them both tested.
    no it can't be the battery. Definitely sounds like alt

  13. #13
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    upgrade to a truck alt !!!!

  14. #14
    TA Nut BlackTAWS6's Avatar
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    Quote Originally Posted by sjsingle1 View Post
    upgrade to a truck alt !!!!
    any recommendations?

  15. #15
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    silver
    2000 formula


  16. #16
    Senior Member
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    silver
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    new or used......how much can your wallet stand?

  17. #17
    TA Nut BlackTAWS6's Avatar
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    wallet can handle it. what would be an advantage of upgrading? I dont really run a big stereo inside so I'm not sure if an upgrade is needed. ??? If upgrade meant it would last longer then that would be cool.

  18. #18
    Senior Member Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Quote Originally Posted by BlackTAWS6 View Post
    wallet can handle it. what would be an advantage of upgrading? I dont really run a big stereo inside so I'm not sure if an upgrade is needed. ??? If upgrade meant it would last longer then that would be cool.
    Upgrades are always cool, but it sounds like a stock replacement would suite you just fine then. Its up to you.

  19. #19
    TA Nut BlackTAWS6's Avatar
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    would the an "upgraded," rather from a truck or not, last longer?

  20. #20
    Senior Member Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    as far as I know, longevity isn't a big issue with the stock LS1 alternator, so I would say no. The truck "upgrade" has more to do with its increased amp output.

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