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1995 gmc K2500 left and right brake lights come on with ignition turned on. 3rd brake light comes on when you step on the brake 4 way flashers do not work. Ignition turned off 4 way flashers and brake lights work as the left and right brake lites are now off. All fuses and relays appear to be working. I am suspecting wiring harness in steering column.

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I think your trouble is in the turn signall switch, just had the same trouble on my truck. Turn signall switch is about $250 because it is actually turn signalls, wipers, washers, 4 ways, and dimmer all in one.

Posted on May 14, 2010


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