To ensure reliability, purchase GM part # 19417633 Heater & Air Conditioner Control Assembly (W/R/Wdo Defg Sw). It is sometimes referred to as GMC A/C Switch, GMC Blower Control Switches. 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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