8192_Protocol.html 8192_Schematic.html 8192_Software.html Andrew K. Mattei kindly sent me his web page URL on building the 8192 serial interface. It even has some compiled software for you! :) The GM ALDL Information Page Other Helpful Links: AutoDOC, a free implementation of an OBD-II capable scantool. www.obdii.com www.Seanster.com/scantool