Halloween sale
Home - Products - Technical Service - GM TECH2 FAQ Download
« Go Back

GM TECH2 FAQ Download

Matched Product
Tech2 Diagnostic Tool for GM/SAAB/OPEL/SUZUKI/ISUZU/Holden

Tech2 Diagnostic Tool for GM/SAAB/OPEL/SUZUKI/ISUZU/Holden   Item No. SP23-B

Buy it Now: US$339.00      Click Here to Shop
Tech-2 for GM is the same tester GM Technicians use to diagnose GM vehicles.
It is an excellent tester for technicians to diagnose GM vehicles.An industry change in protocol from OBD II to Controller Area Network (CAN) has begun.
In order to perform diagnostics on a vehicle that uses the CAN interface; you will need the GM Tech 2 Flash and a CAN diagnostic interface module. The module connects between the Tech 2 Flashs diagnostic link cable and the OBD adapter. Once the module is connected, it can be used on all GM vehicle applications,even those vehicles using other platforms such as OBD I and OBD II.


GM Tech2 can do coding and programming.
And here are the instructions for gm tech 2 how to do the self test and the FAQ list.
GM TECH2 Frequently Question and Answer

About Language
Q: Is there Spanish for GM tech2?
A: No, GM tech2 is only English available.
About Function
Q: Does GM tech2 support coding?
A: Yes, it does, but you need to buy an additional TIS2000, TIS2000 support cars programming until 2007 year.
Q: Can TECH2 support key coding and electronic control unit programming for all OPEL and Isuzu?
A: GM tech2 can't support key programming; as for electronic control unit programming, you need to additionally buy a GM TECH2 and a TIS2000, 
but TIS2000 only support GM and Opel, not support Isuzu.
Q: GM TECH2 support airbag reset? If not, please recommend me another one tool, my car is Chevrolet Tahoe 2007 year.
A: Yes, GM TECH2 support airbag reset for Chevrolet Tahoe 2007 year.

Q: Does GM TECH2 support reading Car VIN number? How to read?
A: Yes, it does. After selecting the car model, enter function menu, and you will find the VIN number reading option.
Q: I`m interested in the GM Tech2 Diagnostic Tool and I would like to know which diagnostic functions that tool has for a Hummer H3.
I have problems with the windshield wipers, the tire pressure control system and the cruise control. Is that tool able to read the trouble
codes and to read some parameters regarding those controllers?
A: GM TECH2 contains Hummer H2 H3 software (from 2007 to 2010 year), so Tech2 is able to diagnose Hummer H3 2007-2010 year. 
As for reading parameters regarding those controllers, it is theoretically compatible, advice you have a try.
Q: Can GM Tech2 send commands to the various modules and is it able to do diagnostics on a climate control programmer? 
 To what year is the scanner effective? I own a 1997 Cadillac DeVille and a 2001 Chevrolet Venture.
A: Yes, you can use GM TECH2 to diagnose climate control programmer, when it has communication GM Tech2 can send commands to the modules.
About compatible vehicle models and years

Q: Does Item No. SP23-B diagnose gm pu's too (1500,2500hd,3500?
A: Yes, it will work on pickup 1500,2500hd and 3500. Just if the cars are 24v, you may need a power supply adapter.
Q: GM TECH2 contains Saturn software?
A: yes, Saturn software is included in the GM software English and support from 1991 to 2010 year.
Q: Is GM TECH2 available on my Cadillac year 1996?
A: Yes, GM TECH2 works with Cadillac.
Q: Does GM Tech 2 work with Australian Holden 1998?
A: GM tech2 is only compatible with North American Holden, and our software for Holden only work with Holden from 1999-2012.
Q: Can GM Tech2 work diagnose 2005 GMC - Sierra 1500 truck?
A: Want to use our GM tech2 to diagnose truck, you need to buy an additional truck adapter, because our GM tech is compatible with truck, 
 but only packed with the car adapter.
About after-sales questions and answers
Q: I bought one GM TECH2 and the TIS2000 software can’t be installed and no identification, what’s the problem?
A: If the TIS2000 you are trying to install is contained in the GM TECH2 software, then it is useless to install TIS2000 software. 
To program electronic control unit, I advice you buy an extra TIS2000 to work with GM tech2.
Q: After receiving GM TECH2, I got some errors.
A: If it is Blue screen, just replace the Blue Screen Chip. If it is not the problem of Blue screen, please send us the self-test report to
check where the problem is; have no idea on how to operate self test? Refer the self-test manual at GM TECH2 “technical support /service”.
Q: GM TECH2 one button doesn’t work how to fix?
A: If you have new version GM tech2, there are two ways to solve: 1) we send you a new button to replace; 2) please send back to repair. 
If you have old version GM tech2 installed with the newest software, the button maybe won’t work.
Q: When I use GM TECH2 for the second times, the tool starts to smoke, and my car voltage become 14V from 12V, what’s the matter?
A: Please follow the correct operation steps: before diagnosing, turn on the ignition and then connect the GM TECH2 with the car, 
when the car starts you’d better test the voltage, because during this process a part of cars’ voltage will reach up to 24V or more, 
especially the car which has a poor contact of electrical ground.

2.How to do ECU programming with GM Tech2 ?

Here is the step-by-step instruction on programming GM (General Motors) ECUs with Tech2 scanner and SPS (Service Programming System) application in TIS2000.
Before using the SPS, make sure that the Tech 2 scan tool and the pc contain the latest software, the battery of the vehicle is fully charged, only the ignition is on power,
and all cables are connected properly. TIS2000 will not work on 2007 up GM, and software must work together with TIS2000 USB key. If you need to program Saab ECU,
you had to use Saab TIS2000 and USB dongle.

Main steps:
Step 1: Instruction for TIS2000 software
Step 2: Data request
Step 3: Data exchange
Step 4: Program ECU
Alternative Programming with “Pass Thru”
Check Programming result
Step 1: Instruction for TIS2000 software
1.Connect the Tech II to the pc.
Note: The hardware key (HWK) has to be registered prior to working with ‘Service Programming System’. To register a hardware key, the form that is enclosed with
the hardware key kit has to be filled in and sent to the address at the top. In case the form is missing, the document is also in the TIS 2000 newsletter (see icon in the TIS 2000 tool bar).
At first, the user receives a temporary code until the key is registered on the next TIS 2000 CD.
Hardware keys that have already been registered are still valid!
To register the hardware key select ‘Hardware Key Registration’ in the menu ‘Configuration’.
TIS2000 installation video guide
Start TIS 2000 on the pc.
Select the application ‘Service Programming System’ on the TIS 2000 start page.
On ‘Select Diagnostic Tool and Programming Process’ (picture below) screen make the desired selection for
1) the used Tech2 diagnostic tool
2) the reprogramming of an ECU that was not exchanged or the replacement/programming of a new ECU
3) the ECU location.
Step 2: Data Request
Connect Tech 2 scanner to vehicle. Power on device – “Tech 2″ is displayed on the screen, then press “ENTER”.
Turn ignition to ON without start the engine!!!
Select “F1: Service Programming System (SPS)” in the main menu.
Press “F0: Request Info” on Tech 2.
If Tech 2 has already stored vehicle data they will be displayed now. In that case, Tech 2 asks you to either use the current data (hold data) or request further information from the ECU (continue).
For the selection of “Next” the vehicle has to be identified as requested by Tech 2.
Note: Depending on the model year and the selected model either a reprogramming of the ECU (F0: Engine) or of the TCM (F1: Transmission) can be selected.
During the Request Info the Tech 2 receives information from the selected device. If the ECU was replaced a “Request Info” has to be performed for the NEW unit. Since the new ECU is not programmed on delivery, the retrieved information is not complete. For that reason, TIS 2000 gives instructions as how to enter the missing vehicle data.
Follow the instructions on the Tech 2. Then press “Exit” on the Tech 2, switch it off and disconnect it from the vehicle.
Step 3: Data exchange
Connect Tech 2 to the pc, switch it on, and click on ‘Next’ on the pc.
Confirm VIN or, if necessary, enter correct VIN, then select ‘Next’.
Validate vehicle data and, if necessary, change with the pull-down menus.
Click on ‘Next’. Button
A new window displays a “Summary” (follow below) with the selected data. Continue with ‘Next’. Select “Reprog” button to download the latest calibration data onto the TechII diagnostic tool.
Note: It is not possible to reprogram an ECU with the same software version.
The window ‘Transfer Data’ is displayed. A bar shows the progress of the download.
At the end of the download, a window is displayed with the request to connect the Tech 2 to the vehicle in order to finish the programming process.
After the closing of the SPS application the TIS 2000 start screen is again displayed. Finally, switch off the Tech 2 and disconnect it from the pc.
Step 4: Program ECU
Connect Tech 2 to the vehicle.
Switch on Tech 2 – start screen appears.
Turn ignition (Do not start motor!).
Press “Enter” in the Tech 2 start screen.
Select “F1: Service Programming System” in the main menu and then “F1: Program ECU”.
Follow the instructions on the Tech 2 screen.
During the download the Tech 2 screen shows the message “Programming in Progress”.
At the end of the download the Tech 2 shows the message “Programming was successful”. The button “Exit” leaves the program. First, turn off the ignition of the vehicle, then switch off the Tech 2 and disconnect it from the vehicle.
Turn off ignition for 30 seconds before starting the motor. Additional information is available in the section “Check programming”.

Write a Review
* Rating:
    Please select rating stars.
* Your First & Last Name:
* Your E-Mail Address:
* Review Detail:
Tell us what you think about this item and share your opinions with other people. Please make sure your review focuses only on this item. All reviews are moderated and will be reviewed within two business days. Inappropriate reviews will not be posted.
After-sales questions and issues: Contact our Customer Service Department. (A customer representative will get back to you).
Please Sign In first if you want to later edit or manage reviews uploaded by yourself.


You can search Technical Service by keyword.
Bookmark It