Authentic GM software puts you in the driver"s seat to fix GM vehicles right the 1st time. Tech 2 is loaded with features: The large, easy-to-read, back-lit screen is the first feature youll notice. Graphic screen displays both test and graphics, and is capable of showing nine sensors at once. Snapshot graphing shows you any failures or glitches at a glance. The Tech 2 scanner is reprogrammable to keep pace with vehicle and tool evolution. RS232 communications port provides the avenue to connect future devices to your Tech 2, such as SPS reprogramming. Authentic GM Software Authentic GM software in the Tech 2 means you have the same information as GM dealers. Supports on-board diagnostics for all GM systems 1992 thru 2008. The authentic GM software will provide full bidirectional control when performing powertrain, chassis, and body diagnostics. Store DTC, freeze frame, and failure record for later review. Watch the status of vehicle diagnostic tests as they run. CANdi Module: An industry change in protocol from OBD II to Controller Area Network (CAN) is ongoing. In order to perform diagnostics on a vehicle that uses the CAN interface, you will need the Tech 2 and a CAN diagnostic interface module. The CANdi module connects between the Tech 2?s diagnostic link cable and the OBD adapter. Once the CANdi module is connected, it can be used on all GM vehicle applications, even those vehicles using other platforms such as OBD I and OBD II. Specifications: Dimensions: 12" x 6" x 2". Microprocessor: 32 bit, 16 MHz. Memory: 32 MB flash type II PCMCIA. Type III slot available for future expansion. Communications: Integral RS232 communications port. Screen: 3.8" x 2.8" back-lit monochrome with full graphics