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International Automotive Technicians Network
Re: 1994 6.5 chevy diesel
Posted to HD/Fleet Forum on 2/11/2019

We did a few of these years ago. I remember I had to get a DLC adapter to connect the tech 2 to the older style GM DLC. After that, I thought I remembered that you have to put it into set timing mode - I can't remember what it was called - then adjust the timi... Login to read more.