To ensure reliability, purchase GM part # 21999381 Door Lock & Outside Rear View Mirror & Power Window Control Module Assembly. It is sometimes referred to as Buick Body Control Module. 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 Buick Park Avenue models.
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