To ensure reliability, purchase GM part # 25858709 Switch Assembly, Headlamp & Instrument Panel Lamp Dimmer & Dome Lamp. It is sometimes referred to as GMC Headlight Switch, GMC Turn Signal Switch. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific GMC Sierra models.
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