To ensure reliability, purchase GM part # 16042121 Electric Spark Control Module Assembly. It is sometimes referred to as GM Igniter, GM Ignition 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 Blazer, C10, G20 models. It fits GMC C2500, K1500, Suburban.
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