2000-2006 and 2007 Classic. 260 extra GM engine and brake real time data items. Device control includes cylinder drop cut, crank learn, brake valves. Trouble code read and clear includes brake, body, doors, seats , dash, climate, radio... Full OBD-2 support all cars. Plots, Gauges, Statistics, Elapsed Times, Sound, Alarms, Fuel Economy, Accelerations. Save, Replay, Export. Uses ELM-327 Blue Tooth or WiFi OBDII, optional NueroSky MindWave Brain headset.