To ensure reliability, purchase GM part # 12478155 Gear,Transfer Case Planet Carrier Sun. 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 Cadillac Escalade models. It fits Chevrolet Avalanche, Silverado, Tahoe. It also fits GMC Sierra, Yukon.
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