Question about 1999 Chevrolet Tahoe

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No brake lights

I checked all fuses . think it might be the brake switch dont know how to test .

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Just had the same problem. The whole system went crazy, sometimes brake lights, some times hazards and turn signals. Turns out the wiring harness in the front turn signal melted against the frame. It looks as though all the tahoes will have this same problem eventually, just the way they were built.

Posted on Sep 08, 2008

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For the switch, first have someone stand behind the truck, then push on the pedal with your hand, so you can can see if the pedal rail comes away from the switch stud. If it doesn't, you have to readjust the switch so it does.
If the rail does come down lower that the stud, but the lights still will not light, pull the switch out, and check it with a multimeter, put it on the Ohms setting, and connect the multimeter probes to the terminals of the switch. If the Ohmmeter reads a very low reading, your switch is likely fine, and it's time to check wiring. If the meter reads very high, near to infinity, then your switch is bad, and just simply replace the switch, and make sure to adjust the ride height of the stud on the rail.

Posted on Aug 27, 2008

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Why no brake lights


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Troubleshooting Procedures - Read Completely Before Beginning
(American Car) All Brake Lights Not Working
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