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Dome Light Flicker?

Discussion in 'Chevy Trucks' started by Chrisxl64, Nov 27, 2012.

  1. Chrisxl64

    Chrisxl64 Senior Member
    from CT
    Messages: 574

    07 Silverado 2500 Classic. Noticing a flickering or "pulsing" if you will in the dome lights. Alternator? Any experience in this?
  2. durafish

    durafish PlowSite.com Addict
    from 02919
    Messages: 1,092

    I have the same problem also.
  3. maverjohn

    maverjohn Senior Member
    Messages: 902

    Had that years back on a older truck, when it rained, door switch getting wet, don't know if that helps?
    with the newer truck's
  4. mrplow69

    mrplow69 Junior Member
    from canada
    Messages: 8

    Sounds like the voltage regulator in the alternator
  5. snerdy

    snerdy Member
    Messages: 32

    Me too in a 2010. dealer says truck searches for voltage placement or some crap, I had 2 alternators, a battery and the ECM changed, and it still does it!
  6. MikeRi24

    MikeRi24 Senior Member
    Messages: 563

    I had that problem recently as well. Took the alternator to get tested and it tested out perfectly fine. I set my truck up to run dual batteries (theres a Sticky here with the write up) and upgraded the alternator charging cable and no more flicker! I would think if anything just upgrading that alternator charging cable would help. I am a die hard GM fan and all, but idk what the hell they were thinking with this one, the factory alternator cable is like 8 gauge wire....leave that an add another piece of 2 or 4 gauge wire right from the alternator to the positive terminal on the battery. Also wouldnt hurt to check all of your grounds while you're at it.