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GM Tech 2 Diagnostic Scan Tool FAQ

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GM Tech 2 Scanner with Free TIS2000 and 32MB GM/SAAB/OPEL/SUZUKI/ISUZU/Holden Card

GM Tech 2 Scanner with Free TIS2000 and 32MB GM/SAAB/OPEL/SUZUKI/ISUZU/Holden Card   Item No. SP23-B3

Buy it Now: US$309.00      Click Here to Shop
GM Tech 2 Diagnostic Scanner, a very good tester used to diagnose GM vehicles,comes with Authentic GM software and supports on-board diagnostics on all GM systems 1992 to 2014, With freeTIS2000 and 32 MB card, support GM cars till year 2007 for programming.


GM Tech 2 Diagnostic Scan Tool FAQ

1. FAQ

About compatible vehicle models and years

Q: Does GM TECH 2 scan tool diagnose gm pickup 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 TECH 2 contains Saturn software?
A: Yes, Saturn software is included in the GM software English and support from 1991 to 2010 year.
Q: Can GM Tech 2 work on SAAB?
A: Yes, our Tech 2 can work on SAAB.
Q:Can GM Tech 2 scanner work on my 1999 9-5 SAAB? 
A: Careucar Tech 2 is with V148 SAAB software, you can get a V143 SAAB card off ebay, use the card on our GM Tech 2 scanner, then it can work on a 1999 9-5 SAAB.
Q: Is GM TECH 2 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 Language
Q: Is there Spanish for GM tech 2?
A: No, GM tech 2 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 TECH 2 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 TECH 2 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 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.Sollution for Gm Tech2 TIS2000 failed to run Win7 Virtual Machine

“I use a GM Tech II diagnostic tool or a gm MDI to attach it to the truck, its on a cd / dvd, its a program i got on-line to reprogram GM BCMS in my truck. my problem is I can load 2007 software [its called ”TIS2000 into my computer [it only runs on a ”win xp” machine”][yes it won’t run in xp mode on a win7 machine],but I need the update to 3/2008 or 8/2008,to get it to see my vin#, so I can add power adj pedals[and some other options, I can’t get the 3/2008 to load. ”
Engineers from careucar.com give Solution as following:
Depending on your computer hardware, you could install XP and your app in a Virtual Machine (VM) from Windows 7. Once installed and configured, you would boot your computer like normal and start XP in a window.
VMware makes Virtual Machine software called Workstation v10. They have a trial, but expect money at some point. The second best option for VM software is called VirtualBox from Sun. It is free!
You would just need a compatible computer, a copy of Windows XP and time to learn the ropes and get your XP Virtual Machine (VM) up and running. Learning how to use it is a one-time thing and at that point you’ll be familiar with VM software in general. That is a huge benefit to have as a computer user.
At that point you would meet the requirements of the GM Tech 2 software and would install TIS2000 within the VM and use the virtual com/serial port to connect to your computer serial port (or USB).

3.How to Unlock Chevy TrailBlazer radio with GM Tech2 scanner?

Connect Tech2 to the OBD port of the vehicle. When the screen of the tool illuminates, it means the tool hooks up with the car. Then you can start the process:
Go to the main menu and select: Diagnostics.
Select Vehicle Identification and then the following options:
– Model Year
– LD Trk, MPV, Incomplete
At the System Selection Menu screen, select: Body
At the Vehicle Identification screen, select the following:
– Appropriate model
– Appropriate Air Conditioning
– Navigation Radio
Select: Navigation Radio.
Select: Special Functions.
Select: VIN Relearn.
Then you will get a message: “Do you want to clear radio theft information?”
To begin clearing, press the soft touch key on the top right of the scan tool. The scan tool will display “Clearing Radio Theft in Progress.”
Press EXIT on the scan tool and cycle the ignition.
Done. Disconnect Tech2 from the car.

4.How to solve 2009 Saab 9-3 1.9 TID non starter by GM TECH 2 ?

This post starts with the problem that 2009 Saab 9-3 1.9 tid no starter, then how to solve? Please go on reading following parts.
Car model and year:
2009 Saab 9-3 1.9 tid
General Car issue: non starter
Tool I used:
GM MDI Global TIS and tech 2

Trouble and what Global TIS and Tech2 find out:
They have read codes to do with ignition and immobilizer and found that the cim is not picking up the old or new keys in the switch he tells me that the chip in the key is not being energized so the cim can’t read the key.
Trouble analysis:
The chip in the key is read by the ignition switch, called the Ignition Switch Module (ISM). Maybe the fault lies there.
How to remove?
1.Operate/move the seats to their rearmost positions.
2.Remove the front side pieces from the floor console.
3.Remove the cover from over the gear lever housing, use 82 93 474 Removal tool in the rear edge of the cover and pull back.
4.AUT: Remove the clamp.
5.Remove the cover under the handbrake by pulling it straight out.
6.Remove the cover on the passenger side by squeezing the cover and lifting it up. Remove the compartment under the cover on the passenger side.
7.Lift up the rubber mat in the floor console storage compartment and remove the screws.
8.Remove the floor console screws; note that screws for plastic and aluminum are different.
9.Remove the sound insulation (certain cars).
10Press in the four catches (two on each long side) and press down the ignition switch module.
11.Lift up the floor console slightly and remove the ignition switch module.
12.Remove the connector; see “Connectors, handling and checking” item 1D.
13.Everything will be OK in the end. If it’s not OK, it’s not the end…

5.GM Tech 2 Error: GM TECH 2 CANdi module interface not detected(solved)

GM Tech2 scanner error: GM TECH 2 CANdi module interface not detected.
1.Together with the car ignition off, connect the gm tech two and gm tech 2 CANdi module(which now is a single extended cable).
2.Power up the Tech2 You may get 12V in the DLC (now it took me a half hour to find out the “DLC signifies “Data Hyperlink Connector” and is what we also call the OBD2 connector, so be ready to be stumped by TLA’s (Three Letter Acronyms).
3.At the principal menu press F3-tool solutions.
4.In the tool alternatives screen pick F9, CANdi Diagnostics.
5.You will find two tests on the subsequent screen, run them each. When you get pass on each, that you are excellent to go. The CANdi should really talk to your 2004 vehicle.
6.Either turn the ignition key of your car to on, or start out it (for a C6 there is not an “on”).
7.Press the EXIT button till the Tech 2 goes back to the primary menu.
8.Choose F0, Diagnostics.
9.Make all of the requested selections to get you for the module inside the automobile you would like to appear at. You could be choosing physique style; you might want the body code (from time to time the third character in the VIN) the engine size, manual or auto and from time to time radio variety. You might also be asked about particular choices, like ZL6. They’re on a tag in the glovebox.

6. How to Connect GM TECH 2 with Vehicle

The Tech 2 receives power through the DLC cable connection to vehicles equipped with On-Board Diagnostics (OBD II) (Figure 3-23).
In the case of vehicles not equipped with OBD II, an external power source such as a vehicle cigarette lighter must be used (Figure 3-24).

7. 10 steps to Reset GM Nav radio TheftLock with GM Tech2 scanner

Here is the step-by-step instruction on clear radio theftlock for GM (GM, SAAB, OPEL, SUZUKI, ISUZU and HOLDEN) models with Tech 2 scan tool.
Tools needed:
GM Tech2 diagnostic scan tool


Tech II Theft-lock procedure:   
Well setup CANDI module with Tech 2 main unit, connect Tech2 scanner with vehicle 
1.       Select “Diagnostics” at the Main Menu screen
2.       At the “Vehicle Identification” screen, select the following options:
– Model Year >>> (radio came from an 04 Escalade or whatever)
–LD Trk, MPV, Incomplete;
3. Select “Body” at the “System Selection” Menu screen
4. At the “Vehicle Identification” screen, select the following:
–          Appropriate model
–          Appropriate Air Conditioning
–          Navigation Radio
5. Select “Navigation Radio” at the “Body” screen
6. Select “Special Functions” at the “Radio” screen
7. Select “VIN Relearn” at the “Special Functions” screen
8. At the “VIN Relearn” screen, the Tech2 will display “Do you want to clear radio theft information?”
9. To begin clearing, press the soft touch key on the top right of the scan tool. The scan tool will display “Clearing Radio Theft in Progress.”
10. Press “EXIT” on the scan tool and cycle the ignition.
1.       The radio theft will learn the VIN. Without learning the VIN, the radio will display a locked message (LOC or LOCKED).
2.       Another way is to see if the sound works by installing the radio, and not turning the key to ON, just ACC. that will work the radio for a test.

8.Customer feedback

I work for a Gm dealership and was a little skeptical at first about this GM tech2. After receiving very quick from seller
I tested it out on every platform, programming, system scans, live plot, remote functions, everything and it has matched everything my shops
factory 2000 dollar Tech 2 has done. Best money I’ve spent on a tool in a very long time!
This GM Tech 2 clone performs exactly the same as dealership scan tool. Everything listed in the sale was there.
This is obviously a knock off of the original tool but you would never know if someone did not tell you. It comes without any labels or stickers on it,
but they were included in a bag ready for you to put them on the tool and accessories. I have used this tool on a 2004 Pontiac grand prix and a 2006 grand
prix to perform diagnostics and set up a new body control module. I went through every screen, tried all the function tests and learn procedures.
No issues with this tool at all. Cables, plugs and accessories are all of quality construction.
I could not be happier with this purchase.
I have been very happy with this scanner, the cables can be a bit finicky at times, and I had to remove and reinstall the memory card several times to
get a good connection on it, but have had no issues at all other than that. I have used it on 2004 Pontiac Bonneville, Saab and Chevrolet Suburban all worked well.
I was pretty skeptical when saw these clone at cheap 250$-380$. Most dealers charge a $100+ diagnostic fee just to hook theirs up to your car, what a joke.
I got one English language software version with 32 MB Card, CANDI, TIS2000 and other diagnostic cables. And I hooked it up to test engine, ABS, transmission etc,
stored DTCs, Freeze Frame, live data, all the test results were displayed on the large, easy-to-read backlit screen.
Keeping the GM Tech 2 for half a year,
no blue/blank screen or communication issue. Now the device is in good condition.
Got my GM Tech2 today, it looks and functions well for a clone. The tech2 and CANDI module worked perfect to diagnose my bad HVAC air door actuator.
I have an older HP laptop running win7 and it has a serial port so has no problem to install software. Time will tell how this works out.
The tech2 clone has done everything I have used it for. I have check and cleared codes including freeze frame data. I used it to test injectors on my friends NOVA 5.3 swap.
It allowed me to pulse each injector so we knew they were not clogged.
Still no problems with this GM Tech2 clone. I was able to use SPS programming to update the theft module OS in my Chevrolet TrailBlazer SS.
And I found this tool can be used on OBD1 cars. I tried it to diagnose my friend’s 1994 Pontiac Trans Am, it worked!

9.How to Use GM TECH2 Scanner to Program ECU with SPS in TIS2000

This is the steps on how to Use GM TECH2 Scanner to Program ECU with SPS (Service Programming System) in TIS2000 with usbkey.
Kindly notice: 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 can only work gm cars until 2007, 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.
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

10.GM Tech2 clone program ECU with SPS in TIS2000

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
2.Start TIS 2000 on the pc.

3.Select the application ‘Service Programming System’ on the TIS 2000 start page.


4. 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.

5.Click “Next” button to continue.

Step 2: Data Request

  1. Connect Tech 2 scanner to vehicle. Power on device – “Tech 2” is displayed on the screen, then press “ENTER”.
  1. Turn ignition to ON without start the engine!!!
  1. Select “F1: Service Programming System (SPS)” in the main menu.
  1. Press “F0: Request Info” on Tech 2.
  1. 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).
  1. 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.

  1. 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.
  1. 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

  1. Connect Tech 2 to the pc, switch it on, and click on ‘Next’ on the pc.
  2. Confirm VIN or, if necessary, enter correct VIN, then select ‘Next
  3. Validate vehicle data and, if necessary, change with the pull-down menus
  4. /upload/service/tech2-program-ecu-with-sps-in-tis2000-4-300x233.gif
  5. Click on ‘Next’. Button
  6.  /upload/service/tech2-program-ecu-with-sps-in-tis2000-5-300x233.gif
  7. 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.


  1. 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.

  1. 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

  1. Connect Tech 2 to the vehicle.
  2. Switch on Tech 2 – start screen appears.
  3. Turn ignition (Do not start motor!).
  4. Press “Enter” in the Tech 2 start screen.
  5. Select “F1: Service Programming System” in the main menu and then “F1: Program ECU”.
  6. Follow the instructions on the Tech 2 screen.
  7. During the download the Tech 2 screen shows the message “Programming in Progress”.
  8. 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.
  9. Turn off ignition for 30 seconds before starting the motor. Additional information is available in the section “Check programming”.

Alternative Programming with “Pass Thru”

In addition to the procedure described above, there is an alternative programming mode called “Pass Thru”. In that case, the data are directly downloaded from the pc to the ECU in the vehicle.

Although the Tech 2 is still needed in that mode, the data entry and the download control is done directly at the pc. Altogether, that method is faster, and it is recommended when a pc with TIS 2000 is within 3m of the vehicle.

  1. Connect Tech 2 to the vehicle.
  2. Connect Tech 2 to the PC switch on Tech 2.
  3. Start TIS 2000 on the PC.
  4. Select the icon ‘Service Programming System’ (Fig. 1) on the TIS 2000 start page.
  5. Start TIS 2000 on the PC.
  6. On the screen ‘Select Diagnostic Tool and Programming Process’ (See picture below) make a selection for

***Pass-Thru mode

***the reprogramming of an ECU that was not exchanged or the replacement/programming of a new ECU

***the ECU location.

Then clock ‘Next’ button.

11.How to Connect GM TECH 2 with PC

 Tech 2 with a PC for the following reasons:
• Transfer of vehicle data (calibration information, “snapshot,” etc.) from the Tech 2 to the PC
• Transfer of vehicle calibration data from the PC to the Tech 2
• Transfer of data (software update, etc.) from the PC to the Tech 2
• Before connecting Tech 2 to the PC, the following steps should be taken: • Make sure that the RS-232 cable (P/N 02001358) is attached to the Tech 2 RS-232 port located on the left side of the Tech 2.
• Make sure the appropriate power supply is connected to the DLC cable power jack connector,
or to the power jack connector at the bottom of the Tech 2.
• Make sure the PCMCIA card is fully inserted into the upper slot at the top of the Tech 2.       Ejection of PCMCIA Card
PCMCIA Card Keying
FIGURE 3-10. PCMCIA Card Insertion

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