- BMW Group Tester One (GT1) is specially offered to the BMW workshops & service center with the same specification that is currently supplied to BMW franchised dealers. It is the special-purpose diagnostic and programming tool of ALL BMW Series.
- GT1 is supplied with IBM T30 laptop for DIS(Diagnostic and Information System) and SSS(Software Service Station)
- GT1 can covers ALL the systems of ALL BMW series cars, It is used to communicate with Electronic Control Unit (ECU) for diagnosis and programming. All the BMW cars with ECU system can be scanned by GT1 system, using DIS, and be programmed using SSS; With GT1 system, you don¡¯t need to split all the parts with fault in the BMW car. GT1 help you to read the fault code, and do diagnosis, programming.The BMW GT1 system allows you to reprogram all the BMW car ECUs to fix software or to install a blank ECU to a repaired vehicle.
- GT1 is the only system that allows you to do this and is absolutely essential if working on Freelander , the GT1 is also the only system that provides all diagnostics and programming for the very latest BMW launched in 2007.
- BMW GT1 software kit comprises of five system ,TIS system(Technical Information System).DIS data system(Diagnostic and Information System); diagnosis system .measuring system and management system. You can test and check data information at same time in GT1.
 
Function: 
- Read faulty codes
- Clear faulty codes
- Data stream
- Activate state
- Programming
- Component test
- Maintenance data information
- Components location
- Wiring diagram etc, TIS and DIS supply all of system diagram of all of BMW car maintainence method and coding information etc