To ensure reliability, purchase GM part # 12634218 Pulley Assembly, Belt Idler. 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 P30, Silverado, Tahoe. It also fits GMC Sierra, Suburban, Yukon.
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