How to pull DIC codes?

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I picked up a bluetooth OBD2 reader from e-bay for about $25. They link to a smart phone, notebook, tablet and you can check and clear codes.
You can also check real time data from most sensors. I like it. Cheap way to check and clear codes on any of my cars without driving to a shop. If you have an android base phone check out TORQUE engine management in the market. $4 app and is much better than the program that came with the bluetooth reader.