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For those of you who may not know, GM has changed the last digit of some of their DTCs to a alpha letter in place of the previously used all number system. eg: The old code for a CAGS failure was P0803, it is now displayed as P080C.
My scan tool displays the code properly as, "P080C," but just says it is an unknown code. With the old code of, "P0803," it would display the definition of the code.
Does anyone have a list of the new DTCs that GM has started using in 2010. Or a conversion chart between the old and new.