What is tech2?

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What is tech2?

What is tech2?

The Tech 2 is a powerful, versatile hand-held diagnostic computer, designed to help diagnose and repair today’s automotive electronic systems. The Tech 2 supports the changes in the on-board electronic systems for model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 will support GM on-board electronic systems for years to come.


The CANdi is an in-cable module that works with existing Tech 2 components including the VCI, cables and adapters to add CAN diagnostic capability to the Tech 2 tester. The CANdi module is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.

The Tech 2 provides extensive diagnostic capability through the 32MB PCMCIA card. The PCMCIA card stores diagnostic information intended to diagnose powertrain, body or chassis control modules and related vehicle malfunctions. It also contains the Service Programming System (SPS) application which allows the Tech 2 to program control modules with vehicle calibration data.

The PCMCIA card is updated by linking the Tech 2 to a PC that has access to the ACDelco TDS website. This method of communication provides flexibility for updating the card with vehicle calibration data, mid-year and new-model-year vehicle diagnostics and Tech 2 software enhancements. Software updates are distributed to GM dealers automatically via TIS2WEB at the GM Global Connect web site or go directly to the TIS2WEB site to download updates at any time.

The Tech 2 is capable of capturing a snapshot of vital performance data at idle or during a test drive. You can replay the snapshot or plot and graph the data directly on the Tech 2, or the snapshot file may be uploaded to an approved GM Techline terminal. The file may also be stored on the CD-ROM terminal for future reference. The snapshot capability allows you to see where an intermittent fault occurred, even if it did not set a trouble code.
Model Year Coverage

92 up OBD systems CAN equipped vehicle coverage with CANdi module
PC Requirements:

Only required if reprogramming or Tech 2 diagnostic software update is performed. Tech 2 is a stand-alone diagnostic tool. Currently GM is recommending a minimum Intel i5 processor
Recommended package:

Intel Core i5 at 2.6GHz 64 bit
2) USB 2.0 (or better) ports
500GB Hard drive
4GB ram
Windows 7 Professional 64bit
Internet Explorer 9 +
Wireless capability
Note: The Tech 2 uses a legacy DB9 Serial Null modem cable to connect to PC. Current spec PC do not have this connection. It will be necessary to have the null modem cable and a Tripplite Serial to USB adapter properly configured on the machine to perform reprogramming or diagnostic software updates.

Software License

Available as three different subscriptions:

Complete GM Service Support Package Includes: GM SI, Tis2Web – All Access, GDS 2, and Tech2Win
Tech 2 Service and programming package which includes software updates and license for the Tech 2 operating software, Service programming software, Tech 2 View, Tech 2 Snap Shot, and Tech2Win
Tech 2 Diagnostics Includes: Car Diagnostic Tool Tech 2 Diagnostic software updates

The Tech 2 does not time out if the software becomes outdated. The tool will display a message to update as a reminder and may not operate correctly with newer vehicles if it is not updated regularly.

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General Motors Factory GM Scan Tools -GM MDI and GM Tech

Tech1A: This was the factory scanner for all GM dealers from 1983 to 1995. It is still available, but in limited quantities. The Tech1A can be a solution for restoration speciality shops working on older GM products such as Corvettes or for the private car collector.


GM Tech 2: This is the GM factory scan tool used in all GM dealers since 1996. Model coverage includes all makes and models of GM vehicles including passenger cars, trucks and vans. Model year coverage is from 1992 to 2013. For GM vehicles prior to 1992 you will need a Tech1A or a MasterTech listed below to achieve OEM level functionality.


The Tech 2 will allow your shop to be to ‘dealer level’ capable on all covered GM cars. Scan, pull codes, graph data and have all bi-directional controls available for all vehicle systems including Powertrain, Body, Chassis and Network. This tool will also allow you to re-program controllers with the optional TIS-2-Web program. Click here for brochure on Tech-2 packages and options. Call obd2tool.com to order.

GM MDI and GM MDI 2: This newest release GM factory scan tool begins it’s coverage in model year 2010. MDI when combined with the Global Diagnostic System 2 (GDS2) software application allows servicing of GM’s new Global Architecure Platform (Global A) vehicles. Model coverage currently includes 2010-2013 Buick LaCrosse, 2010-2013 Cadillac SRX, 2010-2013 Chevrolet Camaro, 2010-2013 Equinox, 2011-2013 Chevrolet Volt, 2011-2013 Chevrolet Cruze, 2010-2013 GMC Terrain and 2011 Buick Regal. By model year 2014 virtually all GM vehicles are serviced by using the MDI/GDS application. For all other 2010-2013 GM vehicles you will need either a GM Tech-2 or the optional ‘Tech-2 Emulator’ program to achieve OEM level functionality. The ‘Tech-2 Emulator’ uses the MDI interface device as the communications interface between pc and vehicle.


The GM MDI when coupled up with the software application ‘GDS-2′ allows your shop to be ‘dealer level’ capable on all the above listed GM cars. Scan, pull codes, graph data and have all bi-directional controls available for all vehicle systems including Powertrain, Body, Chassis and Network. This tool will also allow you to re-program controllers as long as you have internet access on the laptop your MDI/GDS application is installed on.


The entire MDI/GDS-2 package can be ordered from OEMTools preloaded on a new Dell or Panasonic laptop with all needed reference materials and links pre-installed and ready to operate the day it arrives. This complete package also includes a 1 year subscription for model year updates to the MDI/GDS application. Tech-2 Emulator with TIS re-programming can also be configured on the same laptop for the most complete GM OEM level of tooling. Call obd2tool.com to order or click here for quotation request form.


gm mdi