Question about 1998 GMC Sierra

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Third brake lights work but no rear brake lights

No power coming back to rear lights.. Bulbs are ok..

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  • lanceminko Jun 16, 2009

    the two rear brake lights still do not work... the one above the window does work....

  • lanceminko Jun 17, 2009

    All the other lights work.. Blinkers, hazards,tail lights, backup lights, I was told that the backup lights share the same wire coming back.

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Brake light switch is bad

Posted on Jun 18, 2009

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  • Master
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Check the switch on the brake pedal, connect the wires to each other and if the lights work then the switch is at fault, if they do not then check fuses, wiring etc.

Posted on Jun 16, 2009

  • Paul Hutchinson Jun 16, 2009

    I did not realize that the hi-lavel was working. Perhaps a bad earth on the light clusters, indicated by all lights "flashing" when on and turn signal operated, or a broken wire.

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1 Answer

Rear brake light function not working


Hi
You may just have a bad earth in wiring on the lighting or your light control modual could be fuilty has any one tested this for you
Paul

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