Can't read DTC's
I did a search and came up empty handed. I have A problem when I try to read DTC's on my LBZ. It says no DTC's detected. I've tried to read them 4 or 5 times in a row to see if it will read them with no luck. I can read codes in my 2002 cavalier and in my buddies 2005 LLY. And my buddy can read my codes with his V2. What could the problem be?
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