To ensure reliability, purchase GM part # 12720530 Serpentine Idler Pulley. It is sometimes referred to as GM A/C Idler Pulley. 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 Cruze, Silverado, Tahoe. It also fits GMC Sierra, Yukon.
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