Question about 2001 Chevrolet Silverado 2500HD

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I have no brake lights, the blinkers run really fast and if the headlights are on the blinkers will not run at all while braking. Any ideas?

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Have the multi-function switch and its circuits tested. The multi function switch is the blinker arm and the components its attached to in the steering wheel column. The multifunction switch has to do with blinkers, cruise control, wipers, wiper spray, high beams and also tied in with headlight dimmers/daytime running lights(if applicable) and hazards usually.

A good place to start.

Posted on Apr 26, 2010

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Generally means that a bulb is out.
When a bulb blows, then the blinker has less electrical resistance, so the blinker works at a faster pace.
Have someone in the car as you inspect all lights.
.... and! As long as you have an assistant, check the headlights, stop lights, license plate light, brake lights, emergency flashers ....

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