Procedure notes
This video shows you how to replace a burnt out rear turn signal on your 2013 GMC Sierra 3500 HD. We recommend that you change both the driver and passenger side bulbs at the same time on your Sierra 3500 HD as they get dimmer over time and if one is out, then the other one is likely to burn out soon. If the turn signal (also known as a blinker or flasher) blinks rapidly or doesn't blink at all or lights up without blinking when it is turned on, this is your Sierra 3500 HD's way of telling you that the bulb is burnt out. Turn your hazard lights on and check the front of your Sierra 3500 HD and then the back, whichever side is not lighting up is the side with the burnt out bulb.
When changing the turn signal bulb in your Sierra 3500 HD, be careful not to touch the glass portion of the bulb with your fingers as this will cause the bulb to burn out prematurely.
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本视频演示如何更换您 2013 GMC Sierra 3500 HD 车辆的烧坏的后转向灯。 我们建议您在维修您的 Sierra 3500 HD 时，同时更换驾驶员侧和乘客侧的灯泡，因为灯泡随时间会变暗，如果其中一个损坏，另一个也可能会很快烧坏。 如果转向灯（也称为闪烁灯或闪光灯）快速闪烁、完全不闪烁，或者在打开时灯亮但不闪烁，这是Sierra 3500 HD在告诉你灯泡已烧坏。 打开危险警示灯，检查Sierra 3500 HD的前方和后方， whichever side 不亮的是灯泡烧坏的一侧。
更换 Sierra 3500 HD 的转向灯灯泡时，请勿用手指触碰灯泡的玻璃部分，否则可能使灯泡提前损坏。