Originally Posted by Jeepinit95
You don't have to take it in to read the codes. There is a sequence of turning the key off and on that will put it in diagnostic mode and flash the codes for you. I can't remember exactly what it is but do a seach on it and you should be able to find the info on how to do it and what the codes mean.
As far as the clutch is concerned I would try bleeding the master cylinder.
Without starting the engine, turn the ignition key ON, OFF, ON, OFF and ON. The CHECK ENGINE light on the dash will begin to flash.