GMC SIERRA TURN SIGNAL NOT WORKING

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    How to Use a Test Light
    VIDEO
    How to Use a Test Light
    Instructional repair video
    Turn Signal Problems
    GUIDE
    Turn Signal Problems
    Turn signals are intended to help inform surrounding drivers of the vehicle's intended change in direction. Although there are a few different causes for signal failure...
    Turn Signals Blink Fast
    GUIDE
    Turn Signals Blink Fast
    Turn signal indicators or blinkers as they are called work in a specific manner which is dictated by the turn signal bulb and circuit resistance.
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