To ensure reliability, purchase GM part # 10456019 Knock, Sensor O/L. It is sometimes referred to as Pontiac Crankshaft Position Sensor, Pontiac Knock Sensor. 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 Pontiac Bonneville, Grand Am, Grand Prix models.
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