 If you looking for a low cost solution to adding extra horsepower to your Hummer H2, consider a Performance PCM Programmer. With a Hummer H2 Flash Tuner or Hummer H2 PCM Programmer you can alter your timing, change shift points, recalibrate for different wheel sizes and more. The Hummer H2 Flash tuners that we offer will take your H2's factory PCM settings and bump them to the next level. PCM tuners also give you the option of returning your Hummer H2 computer's factory setting in the event of warranty work or sale of your H2.
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