Question about GMC Sierra 1500

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Brake lights will not work. tail lights work. fuses good. wires not loose. replaced bulbs

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  • timwoods May 04, 2010

    the brake light on the cab works but the two rear brake lights don't

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I would check the brake light switch on the brake pedal, verify you have power going to it, and then, when the brake pedal is pushed down, check for power at the other connection.

Posted on May 04, 2010

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  • James Milzheimer
    James Milzheimer May 04, 2010

    I would check for ground and power at the sockets, you may not be getting power from the cab brake light, and the rears.

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Most every circuit in a car goes through a fuse. if you look in your owners manual for the particular vehicle you drive, you should find a listing for a fuse for brake light or brake lights. The tail light being OK should not have anything to do with the brake light. They'll be different bulbs, or, at worst, different filaments in the same bulb, and on different fuses. The brake and tail lights are distinct because otherwise, if you had your tail lights on at night, no one could tell you were pressing your brakes.

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Hi.

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