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GM MDI with software  GDS2 and TechWin . 

GDS2 works for Vehicle models after 2010 years .

TechWin works for Vehicle models before 2010 years

General Motors MDI (Multiple Diagnostic Interface)wireless

GM MDI (Multiple Diagnostic Interface) for wireless ECU reprogramming utilizing J2534. Hardware kit only.

The GM MDI is initially being introduced with Pass-Thruprogramming capabilities only.
It can be used to perform Pass-Thru programming on all vehicles built since 1993 and willsupport all vehicles into the future.
The GM MDI will be required to perform diagnostic tool onselected NAO vehicles for model year 2009.
Diagnostic soft-ware is scheduled to be released for the GM MDI during thefourth quarter of 2008.

When diagnostics are introduced, the MDI will also get a remote data record capability.
This permits recording data duringa road test, similar to the Tech 2 Snap Shot function.
A trigger switch connector is provided for this purpose.
Regulations require programming procedures to be compliantwith SAE Recommended Practice J2534.
The GM SPS is com-pliant with SAE Recommended Practice J2534, and the GMMDI is compliant with the portions of SAE J2534 that areapplicable for GM vehicles.

The Future of the Tech 2
The Tech 2 remains an essential tool through at least the 2010 model year.
The GM MDI will not support past models when its diagnostic capabilities are introduced.
And, the Tech2 will continue to be needed to diagnose all vehicles fromprevious model years.
Remote programming with the Tech 2 will continue to be supported for use on all 2007 and previous vehicles.
Additional information will be supplied in future.

Note: Requires software subscription to GM SPS (Service Programming System), which must be purchased separately via the ACDelco Tech Connect website.