Chevy Impala Forums - View Single Post - Enable true TapUp/TapDown on the 2012+ 8th gens with HPTuners
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post #13 of (permalink) Old 11-02-2015 Thread Starter
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Very good point. I just check and while the 2012 Camaro and the 2012 Impala both have the exact same ECM "OS ID", the TCM "OS ID" is different - so maybe the TCM OS in the Impala just lacks the capabilities....

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