Interior/exterior lights flickering.

Discussion in 'Audio & Electronics' started by DrunkElvis, Jan 26, 2019.

  1. DrunkElvis

    DrunkElvis Member

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    2009 Tahoe LT. Flickering doesn't start until I start the Tahoe but once started, all my interior lights, headlights, and fog lights flicker. Battery is brand new, autozone checked out the alternator and said it checks out good, plus I replaced the headlight switch but I'm still having the issue.

    Any suggestions?
     
  2. kbuskill

    kbuskill ***CAUTION*** I do my own stunts!

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    Check your grounds.
     
  3. mikeyss

    mikeyss Full Access Member

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    Mine did something similar, the factory ground cable on the battery was loose in the connector. I replaced it and no more flicker. I now have dual batteries so the lights are always bright now, lol
     
  4. Doubeleive

    Doubeleive Supporting Member

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    check and clean up all the grounds under the hood
     
  5. DrunkElvis

    DrunkElvis Member

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    So this issue disappeared for about 5 months and just came back. Where is the ground locations for these engines? Sorry for what may seem to be a silly question but I'm not very knowledgeable when it comes to electrical wiring. A quick google search shows so flat metallic looking wire but I'm not sure if that's what I should be looking for.
     
  6. Galante

    Galante Supporting Member

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    There are many under hood and on frae but start with your battery negative and follow it, there are a few leads on it. Batt to frame, batt to engine, engine to body, body to frame....
     
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  7. John Root

    John Root TYF Newbie

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    What would reason my interior lights to stay on even when all doors are closed?
     
  8. Galante

    Galante Supporting Member

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    Either the switch on the dash is in the on position or a door switch isn’t working or the tailgate or tailgate window switch isn’t working.
    The round knob on the dash turns left and right to dim or brighten the dash lights all the way to a click puts the interior lights on constant. C10C6EE3-3682-4B4B-9A6C-BB2BF025A456.jpeg
     
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  9. DrunkElvis

    DrunkElvis Member

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    Double checked the grounds that I could find and everything is solid as a rock. Excuse the dirty engine, gravel roads here in Texas make it difficult to keep clean.

    Question about the 4th picture. The positive terminal has a wire running to a box that's labeled fuse/fusible, with a wire running out of it somewhere else. I haven't pulled that box off to open it up but what does that fuse go to, if there's one inside?

    20190614_171236.jpg 20190614_171309.jpg 20190614_171322.jpg 20190614_171249.jpg
     
  10. kbuskill

    kbuskill ***CAUTION*** I do my own stunts!

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    That is your 175A Maxifuse... it feeds the power from the battery to the main fuse box under the hood which feeds EVERYTHING.

    Disconnect the battery and then pull that cover and fuse and clean both sides and reinstall.
     

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