OBD 2 Reader

I bought a cheap one at AutoZone when they first came out, years ago. It's the one I still use. I have fixed a whole lot of broke cars and trucks using that thing to diagnose. Unless you need to toss out extra cash you don't need the one made for NORAD. Just go to Harbor Freight and get one. Even the very basic ones read and clear codes. The codes are universal to all vehicles so, for the average guy at home a basic code reader will probably do everything you ever need to do. An EGR code is an EGR code (etc..) be it Volvo or Chevrolet.