To ensure reliability, purchase GM part # 15939021 Rear Axle Assembly (4.10 Ratio). It is sometimes referred to as GMC Axle Shaft. 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 Envoy models.
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