Question about 2003 Chevrolet TrailBlazer

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I have a 2003 chevy trailblazer. The brake lights stay on when the car is off. If I pump the brakes, they cut off. But today, they just came right back on. I checked the emergency brake and it was off. How can I make sure they will not come on in the middle of the night?

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LOOK DOWN AT BRAKE PEDAL ARM TO SEE IF BRAKE SWITCH FELL OR LOOSE NEED ADJUSTING.IF ALL IS GOOD REPLACE BRAKE LIGHT SWITCH.TO ADJUST BRAKE SWITCH.THE BRAKE SWITCH IN BRACKET THE BRAKE SWITCH PLUNGER SHOULD TOUCH BRAKE PEDAL ARM BEFORE BRAKE LIGHTS WILL TURN OFF.

Posted on Oct 05, 2010

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Posted on Jan 02, 2017

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1 Answer

Abslight stays on. How to fix? This is a2007trailblazer?


First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
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Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
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