2014 Chevy Spark TSB Fixes Pistons, Transmission Mounts

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GM is conducting a couple of service campaigns on select 2014 Chevy Sparks for noisy engines and broken transmission mounts. The first service campaign addresses a potential knocks, ticks, and rattles coming from the engine, as well as sluggish performance. The cause has been narrowed down to a possible imperfection with the machining of the...

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