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No Tail lights. Or brake lights(when the headlights are on). HELP!!!

I have a 95 GMC suburban and I have no tail lights at all. When my head lights are off the front and rear turn signals work( unless you hit the brake then they work but flash fast). When the headlights are on the rear turn signal don't work(unless you hit the brake then they work but once again they flash fast). Also when they head lights are on there is no brake lights at all except the little strip on the top. Headlights on there is no tail lights at all. When i turn on the hazards the lights in the back work and flash but not very brightly like they should. I just replaced the brake switch just the other day and yesterday i replaced the turn signal/multifunction swith that runs through the column. Please help!!!

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I think you have a bad ground at the back on both rear lights or their earth out on the same connection but these american cars use a funny system where the stop lights are the indicators and not a seperate yellow light like europeon motors ,Now these brake light switches also allow the indicators to work by shutting off the feed to the stop light so it flashes with indicators ,Why american cars use this system i dont know as its so complicated for the stop light switch function but try the ground or earth wire on the back lights and if no joy then ask a american mechanic with experiance of this sort of circuitry as when i get american cars for import i have to fit new back lights and disconnect the brake light switch .

Posted on Feb 17, 2012

  • raynmichael0 Feb 19, 2012

    Thank you Soooo much! You were definetley right... It was corroded in the middle of the line, replaced a strip of it and they work!! Thank you again!!

  • Colin Stickland
    Colin Stickland Feb 19, 2012

    i do get amolished oin this site as iam a europeon mechanic and told off for answering questions on american cars but at the end of the day its got four wheels and a engine so although i may not know where the goggly ganger is located on a particular vehicle but i do know its playing up .Anyway glad its sorted as iam just waiting for friends to appear then its off to the market in san isidro and the boot sale in dolores (Alicante) Now i will feed the latest animal to appear at my gate a vietnamese minature pig ,who dumped it ?? i dont know but its cute and cleverer than a dog thats for sure .



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Check the TAILGHT FUSE. GM's unusual way of letting you know there is something wrong. Otherwise how often do you check your tailight operation. Only by another driver telling you, your tailights aren't working, would you know. Hope this helps.

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yes park lights and dash lights are together. start looking in the trunk for a bad wire.

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SOURCE: 93 suburban no tail lights parking lamps or

Sounds like it could be the headlight switch.

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