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  1. 2020+ LM2 Duramax Powertrain
    I purchased this truck Sept 23, 21 with 10k miles. Got a good deal, had equity, perfect storm in this market. Three days later, CEL. Week later, to GM and they said needed reprogramming and they did it. 3 days after that, CEL. (about 3 weeks of ownership at this point) 2 weeks later...
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