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Heavy Metal Performance is the source in Rockdale, IL, for skilled workmanship on high-performance diesel engines. In just a few minutes, you can add …
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4.8/5 · 22 reviews
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Mar 8, 2021
Heavy Metal Performance helped me with my 7.3 diesel had cold hard starts and had a misfire on one of my cylinders. They did a great job fixing both of my problems putting new glow plugs and a inject… Full review by Noelle Sierra
Feb 15, 2020
Just had my 2016 Silverado Duramax 3500 CP4 converted to a CP3 emissions compliant. Could not be happier! These guys are fantastic, knowledgeable, priced fair!! It runs like a new truck. These are th… Full review by Gil Caire
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