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  1. 01-04.5 LB7 Duramax Powertrain
    NEED HELP i have a 2011 gmc serria 2500 hd. 282,000 miles. have a EFI live tune for def and egr delete. Tune has been on for about 5 years problem started 4 months ago. truck is randomly shutting off while driving and wile siting still them comes right back on. Then it got worse turning key...
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