Diesel Bombers - Codes need help

Diesel Bombers (https://www.dieselbombers.com/)

- Chevy/GMC Duramax 07.5 -10 LMM (https://www.dieselbombers.com/chevy-gmc-duramax-07-5-10-lmm/)

- - Codes need help (https://www.dieselbombers.com/chevy-gmc-duramax-07-5-10-lmm/130775-codes-need-help.html)

Stumpy 69

06-05-2016 05:39 PM

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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