To ensure reliability, purchase GM part # 20904439 Relay Assembly, Trailer Brake Control. It is sometimes referred to as Cadillac Relay. 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.
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