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  1. #21
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    Default Re: Another low beam headlight issue. Please help.

    Quote Originally Posted by nox View Post
    Could it be the headlight switch itself in the column? No power to the relay, that would be where I start before the BCM.


    Sent from my ASUS_Z00TD using Tapatalk
    Quote Originally Posted by Nicksmith5553 View Post
    I replaced the headlight switch already. Bcm is there only thing I haven't touched
    I think nox was talking about the multi function switch that is in the steering column. Like this:

    https://www.napaonline.com/napa/en/s...4&catIndex=App

    I've had both the "headlight switch" in the steering column go bad as well as the HDM relay/module go bad twice. Not sure how to troubleshoot the fact that you have no power to the relay... sorry.
    2008 Grand Prix Base: Engine cover delete , flipped dogbone bushings, Transgo shift kit, Hayden 403 trans cooler,
    Quote Originally Posted by Yarbeau View Post
    we are all anal about our vehicles. Otherwise we would not be on an extinct platforms forum debating 3000 dollars cars!

  2. #22
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Another low beam headlight issue. Please help.

    Check power at the headlight and multi-function switch.
    Chris B
    2002 GT

  3. #23
    Donating Users Swiggles's Avatar
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    Default Re: Another low beam headlight issue. Please help.

    I would check the multi switch first. Bcm had to be programmed by the dealer but I think you can use a used one. Otherwise Rick auto has new bcm, I think they are $250ish last I looked.

    No more GP 04 Impala SS Indy:
    Gen V 3.6|FWI|N* TB lq4 MAF|1.8 Rockers|F&R Plogs|ZZP 3" Catted DP|ZZP 2.5" Catback|

  4. #24
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    Default Re: Another low beam headlight issue. Please help.

    Quote Originally Posted by Nicksmith5553 View Post
    I replaced the headlight switch already. Bcm is there only thing I haven't touched
    I will know tomorrow with my car as have same issue. Taking it to the dealer to see if it is the bcm before i replace it . I've replaced hdm /#35 relay and headlight switch . Last option was bcm but wanted to make 100% sure . So after 4 pm cst i will post what they found.

  5. #25
    Killa Bee Scottydoggs's Avatar
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    Default Re: Another low beam headlight issue. Please help.

    you guys got any other issues like the fan motor blowing on 5 only, or the parking lights not working? if so it could be the ignition harness. they seem to affect a load of different things.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  6. #26
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    Default Re: Another low beam headlight issue. Please help.

    Quote Originally Posted by stocker View Post
    I think nox was talking about the multi function switch that is in the steering column. Like this:

    https://www.napaonline.com/napa/en/s...4&catIndex=App

    I've had both the "headlight switch" in the steering column go bad as well as the HDM relay/module go bad twice. Not sure how to troubleshoot the fact that you have no power to the relay... sorry.
    Thank you, I was talking about the multi switch. A short in their can cause the Relay to receive no signal.

    Sent from my ASUS_Z00TD using Tapatalk

  7. #27
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    Default Re: Another low beam headlight issue. Please help.

    I've also changed the multi switch. The only other thing that doesn't work is my cruise won't stay on. I have also had it lose all power in the cab and come back on about 3 times now while driving.

  8. #28
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    Default Re: Another low beam headlight issue. Please help.

    Quote Originally Posted by Nicksmith5553 View Post
    I've also changed the multi switch. The only other thing that doesn't work is my cruise won't stay on. I have also had it lose all power in the cab and come back on about 3 times now while driving.
    This is info that would be nice to know from the start...



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  9. #29
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    Default Re: Another low beam headlight issue. Please help.

    Sorry, I haven't been the only person driving. Just got this info about the inside power. Feel like this going to get expensive.

  10. #30
    Donating Users Swiggles's Avatar
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    Default Another low beam headlight issue. Please help.

    Cruise not working on my 2000 was because one of the high mount brake lights was out, weird safety thing I believe. Figured it out with my led install.

    No more GP 04 Impala SS Indy:
    Gen V 3.6|FWI|N* TB lq4 MAF|1.8 Rockers|F&R Plogs|ZZP 3" Catted DP|ZZP 2.5" Catback|

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