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  1. 06-07 LBZ & LLY Duramax Powertrain
    I normally run my PPE on lvl 3 for daily driving, but when I tow my trailer I always go to lvl 2 just to be safe. Everytime I reprogram the truck from lvl 2 to lvl 3 I get a CEL and P2610 ECM/PCM Internal Engine Off Timer Perf code. Any ideas?
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