Question about GMC G2500

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Have turn signals tail lights but no break lights

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  • scottray8329 May 05, 2010

    Iam sorry i forgot to say i replaced breaklight switch. it didnt help

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Hi, it sounds to me like your brake light switch has either failed or come loose.

to find your brake light switch you need to get on your hands and knees so that you can have a close look at the brake pedal,
then look closely at the brake pedal and follow it up to where it goes through the bulk head into the bonnet, now you should see the brake light switch attatched top the top of the brake pedal, it should have a couple of wires going to it.

its hard to see so make sure you have a good look but it connects to the base that the top of the brake pedal is joined onto then when the pedal is pressed this then pressies a little button on the brake light switch this then switches the brake lights on,
now it can come loose so check this but most often you can use tape on the brake pedal to take up some of the slack that has built up over many uses, or you could just replace the switch.

let me know how you get on or if you need further assistance ok

Posted on May 05, 2010

  • paul proctor May 05, 2010

    you no when you replaced the switch did you try operating the switch by hand by pressing the button in on the switch, it may be wort trying just to rule out any ware on brake pedal causing the problem, also check its adjusted properly because if the brake pedal is not pressing the switch far enough in then this could cause your problem.

    it might also be worth checking your fuses and replace any that are blown.

    the only other problem that could cause this is corrosion inside the back lights, you could remove the rear lights and check the board that the bulbs go into as water can get in here and cause corrosion making the lights short out so have a look and let me know what you find


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