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Hey I'm new here but I have a 03 GMC 2500 hd Duramax I bought a edge cts3 and I hooked it up it comes on and I go to tune it. It goes thru everything but when it starts reading the factory data it stops and say it can't read the factory data log and it has to reboot any ideas why and how to fix it
 

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I would call edge direct. They'll straighten you out and help you troubleshoot the problem
 

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2007 Silverado CCSB 4X4 LBZ 6sp
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What other mods are done to the truck. Like do you have an aftermarket radio? On my 05 Sierra 1500 gasser I had a stereo module go bad in a way that would stop anything that would plug into the obd2 port. So like if I wanted to change the tune on the computer I had I have to pull some fuses or install the OEM radio back in. I know different trucks but both in class 2 data systems.
 
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