This is about GM Tech 2 scan tool for Hummer troubleshooting and programming.

Can I have a cheap Tech 2 for Hummer?
Yep. Both the original and HQ clone can work for your car.

Where can I get a working clone at a good price?

https://www.autonumen.com/goods-6947-GM-MDI-2-Diagnostic-Tool-Multiple-Diagnostic-Interface.html

Why my Hummer is not shown in the GM vehicle list?
That little short list is incorrect and only shows a few of the earlier than 2007 CAN bus vehicles.

Tech 2 clone for both troubleshooting and programming Hummer?
I’ve used my Tech2 on my 08 many times for troubleshooting not programming
But I think it should be able to program Hummer.

Anyone has good success of Hummer H3?
My H3 has had a CEL on – po452. I checked it with the tech 2. Well it pulls 3 codes, po455 (large evap leak), po442 (small evap leak), and po449 (vent solenoid control).

Tech 2 is possible to program for Hummer H2 above the year 2007… what to do in that case?

Actually it does the programming just fine on newer than 2007 GM vehicles BUT you must pay for an ACDelco TDS subscription for vehicles above 2007 and you would use the CANDI module that comes with many of the Tech2’s for working with CAN bus vehicles. You can subscribe for it.
This is ONLY needed if you want to program or update the software in a module. ALL of the build in diagnostics and testing for vehicles up to 2013 works without the subscription or the older TIS2000 software. You only need those for doing actual programming. The older TIS2000 software – that is what has the programming was discontinued in 2007. TIS2000 does have the actual programming for all vehicles up to 2007. After 2007 GM went to the TDS system.
You can also get a newer style MDI or MDI 2 for diagnostics and programming. The catch with those. They have NO screen or built in software and you must pay for a subscription from from ACDelco TDS to use an MDI.
Other brand units, a very select few can do actual programming and use the pass-through method. NONE have the diagnostics that the actual Tech2 scanner or GM MDI Scan Tool (with the subscription) will have. Check with Autel and see if they have the full diagnostics and re-calibration for the rear air suspension on a Hummer H2. Not going to happen, there is too little demand for them to hack and reverse engineer that particular bit of code in a Tech2 to figure out the diagnostics and then write programming for that for their tool.

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 autonumen.com to order or click here for quotation request form.