Chevy/GMC Duramax 07.5 -10 LMM Discussion of Chevy and GMC Trucks with LMM Duramax Turbo Diesel Engines

Codes need help

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Jun 5, 2016 | 05:39 PM

Stumpy 69

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Codes need help

I got co569. Po642 and vo140. Help don't know where to start. Also 4 wheel drive light not working service 4 wheel drive lite on

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