Remove the rear seat/hump(no need to take off any plastic) and look on the left side for a covered connector. It should have two wires going to a connector, if memerory serves its a white connector.. With the ignition on and kill switch off (run position), jump the two wires on this connector.Use a piece of wire,a paper clip,whatever. Look at the dash's top display. It will reveal a code or sometimes multiple codes listed sequentially. Write them down and refer to your manual or us. If you want a manual I post a link to one on-line in a minute.
RSD.