Review on Enhanced GM OBD2 Diagnostic Scanner - FOXWELL NT530: Read & Erase Error Codes across Multiple Systems by Mark Morrow

It looks like a good solid professional device. Mine came with an ODBII cable and a mini USB cable to connect to a computer. It's not a Tech 2 clone as one reviewer said, but it does pretty much everything a Tech 2 scanner does, including key fob programming. For non-GM vehicles, it works well as a generic ODBII scanner. The included documentation was sparse aside from a quick start guide, but a full user guide can be found on the Foxwell website. The vehicle model can be selected manually or the chassis number can be entered using the sophisticated on-screen keyboard. The data can be saved, but you must enter a file name. The default is GM, so I ended up just adding a number or letter so I don't have to type a lot. The software to read your saved data can be downloaded from their website and you need to register it with the device's serial number in order to use it. I turn it off and start over. It throws an error when I try to clear engine or transmission codes, but it reads and clears engine codes just fine in OBDII mode. All other functions work fine in GM mode. I emailed their tech support about this and they responded the next day. English is not their first language, so you have to speak plain text when talking to them. There are better code scanners that read specific GM codes, but this is the cheapest I've seen.