To ensure reliability, purchase GM part # 20968132 Sealing Strip Assembly, Rear Side Door Window Outer. It is sometimes referred to as GMC Weather Strip. 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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