To ensure reliability, purchase GM part # 84021666 Communication Interface Module With Telephone Transceiver. It is sometimes referred to as GMC 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 GMC Acadia, Savana models.
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