To ensure reliability, purchase GM part # 21993937 Weatherstrip Assembly, Front & Rear Side Door Upper Auxiliary. It is sometimes referred to as GMC Weather Strip, GMC Door Seal. 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, Yukon models.
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