To ensure reliability, purchase GM part # 12471398 Block,Locking Differential Thrust. 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 Buick Rainier models. It fits Cadillac Escalade. It also fits Chevrolet Blazer, Silverado, Tahoe. This also fits GMC Sierra, Suburban, Yukon.
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