Question about GMC Envoy

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Brake lights wont flash and turn signal wont flash

My brake lights wont flash and on the dash one of my turn signals dont flash but all the light be on at night time i have no clue all of the fuses are good

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  • Spitfire904 May 14, 2009

    My blinkers do sort of the same thing, when the lights are off and i turn my left blinker on the mileage and radio blink, and when the lights are on; the left turn signal stays on and does not blink and the right does the opposite. Also my wipers only work on high. It sounds like it is the turn signal switch with the cruse control and all that on it.


  • Anonymous Mar 29, 2014

    when I hit a bump and apply my brakes then use my turn signals all my lights flash in back of my truck

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Turn on the turn signals without turning on any other lights, first left, walk around the car, and see if there is a light that is not functioning, then right, and do the same. If there is a light that is not functioning, replace the bulb.
If all lights work, then its the unit flasher unit itself, and can be baught at a parts store, and is easy enough to replace in the fuse box of most cars.

Posted on Apr 14, 2009

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Posted on Jan 02, 2017

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