To ensure reliability, purchase GM part # 19210066 Powertrain Control Module Assembly. It is sometimes referred to as GM Engine 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 Chevrolet Trailblazer models. It fits GMC Envoy. It also fits Oldsmobile Bravada.
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