To ensure reliability, purchase GM part # 84178160 Rear Upper Suspension Control Arm Assembly. It is sometimes referred to as Cadillac Control Arm, Cadillac Trailing Arm. 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 XTS models.
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