The third generation diagnostic service tool for GM .The GM MDI offers faster programming speed at a lower cost.

* The GM MDI is a compact communication module that manages the transfer of data between a vehicles onboard ECU network
and a PC.
* The GM MDI offers faster programming speed at a lower cost. Depending on the vehicle architecture, the MDI can be 20%-70%
faster than the Tech2.
* The GM MDI allows the user to perform Pass-Thru programming procedures using software running on a laptop or desktop PC.

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 diagnostics 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 GM MDI 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.

Features:

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 website.