1997 Gmc Sierra

brake lights work if i lightly press the bake pedal, if i push all the way down the brake lights fail. i am not a car guy, i have been told to check my ground? i dont know what that means. any help appreciated

1 thought on “1997 Gmc Sierra”

  1. Not sure why you would need to check a ground, but a “ground” is the negative battery connection.
    Understanding and Troubleshooting Electrical systems.

    I would think that if the light comes on at all the connection would need to be good. My guess would be the brake switch that is mounted on the side of the brake pedal is failing or out of adjustment or pulling the wire loose when you press all the way down. This is what I would check first.

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