GM Tech2 Reset 05 Chevrolet Corvette Brake light

Car model and year:

2005 Chevrolet Corvette M6 base

 

Symptom:

Brake lights are not working. Including the 3rd brake light.

 

GM scanner:

1. I do have an Autel 519.
2. GM Tech II scanner (is a must tool)

 

What I tried to do:

Replaced the brake light switch. Swapped back in the original. Still no brake lights.

 

What should do next? (From experienced user)  

1. When changing the BPS, did you do a relearn with a Tech II to calibrate it with the BCM.

   When you have the tech II on the car to do the BPS relearn, did you go into BCM data after to see if the pedal was signaling the BCM to turn on the brake lights?

   Hence problem could be BPS not calibrated correctly to start with at the BCM, or could be the wiring/rear bumper void connector, or just rear grounding the problem instead.

   And if you don’t own a Tech II ( at least clone) to work on the car, it’s your first mistake, since even basic items like brake pedal sensor replacement have to be calibrated to the BCM via the tool. So on that note, if you list your location, someone local may have a Tech II to put on the car, until you get your own.

 

2. For Autel 519

The brake position sensor is a restate type device, not a on/off switch. So when it replaced in the car and since the each sensor will have a slightly different reading, the BCM has to learn it value when the pedal is not pushed, then when the pedal is pushed.

Double check your Autel 519, but not sure is has a BPS relearn for the GM cars on it, which is required when the brake pedal sensor is replaced.

Once the BPS vavlues have been learned to the BCM, then you can go into BCM data to make sure that the BCM is seeing the changing rates, and activating the brake lights. From here, then we are done to just the fuse and wiring from the BCM to the lights (then ground).

So again, could be the old BPS is worn, and its current resitance values are not the ones first leaned in, the replace values where never learned in, and why the BCM is not seeing the correct values to turn on the brake lights to begin with.

 

Finally, Solved!

I took the car to my friend’s shop. He fixed it in 5 minutes with a BPS relearn. I’m not sure why this was required. I did change out the switch but I put the original back in. Or the previous owner could have changed it and not known a relearn was required. He actually knocked quite a bit of money off the car because of this issue. Either way I have brake lights!

 

Good to know:

I have/used just about every Tech II / MDI device known, and it’s the VX GM Nano’s that I use the most (have one in both usb and wifi versions).
Hence it works at both a Tech II using cracked Tech2win software for the C6 and back cars for free that comes with it, and since it is a MDI clone to being with, works for C7 and newer cars running GSD2/TDS as well.

Hence the problem with the hand held tech II clones, is they only work on C6 or later cars, and not the newer cars that need MDI running GDS2 instead.
Regarding using TIS2000 with a hand held tech II clone, the unit only comes with a rs-232 connector cable, so you end up having to pick up a usb cable to connect it to a machine to run tis2000 instead.

So quick break down of GM software.
Tech2win is the same software that the hand held tech II’s runs internally, but runs it on a laptop instead. It’s used for diagnostics, and a few relearn type features.

Tis2000 is used for SPS firmware flashing of the C6 cars back. Note, there is the standard version that only goes up to 2009 cars, then there is the abroad version for spotty internet areas that will go up to 2013, since TDS may not work correctly if the area internet is not fast enough (think abroad where a service area may only have phone dial up).

GDS2 is the diagnostic and some relearn items for the 2014 and up cars.

TDS is the on-line SPS programming that replaced Tis2000 for the new cars from 2009 up for most firmware and special programming, even on the older cars.

As for the VX GM nano, runs all the above software, and in most cases (short of TDS that you would need to pay for a subscription), does so for free. Hence this is the reason that it’s favored, since it covers me on pretty much any GM car running no service fee software..

 

Credits to @Dano523 (CF Senior Member)

 

For the reliable clone GM TECH2, MDI and VXDIAG NANO GM, you are advised this one:

GM TECH2

GM MDI

VXDIAG NANO GM (USB)

VXDIAG NANO GM (WIFI) 

GM Tech2 Clone SP23 Series Which One to Buy?

Here's customer suggestion on which tech2 clone should you get: 

"The one I ordered shows this software version: GM- English 33.004 1991- 2013
http://www.obdii365.com/wholesale/gm...d-tis2000.html

My buddy at the Chevy dealer says theirs is also at v.33.004

The one on aliexpress didn't mention any designations such as -B, -C etc. (or part number at all), so at that price it may likely be one of the cheaper hardware versions, which steered me towards obdii365.

They also had this on the site to explain the differences, plus another vendor confirmed the info in an email request I sent out yesterday:


Tips Help you choose suitable Tech II:

There are 5 configurations of Tech2 on our website, they are SP23-B3, SP23-B, SP23-C and SP23, SP23-1

All of them have the same function, their differences are :

SP23-B is the best Tech2 with Black Carry box, more stable

SP23-B3 is the SP23-B with carton box and best quality

SP23,SP23-C is the same as SP23-B, it also includes the Black carry box, but comes from another manufacture.

SP23-1 is the most cost effective one, it is with carton box, will help you save much more money.

In conclusion:

If you need the most professional Tech2 with best quality, please choose SP23-B ,because it has a black carry box.

If you need cheaper Tech2 with best quality, please choose SP23-B3"

96 LT4 Corvette PCM Reprogramming by GM tech2 Clone

I purchased a 1996 PCM that was used for short money, my goal was to keep it as a spare for my ’96 LT4 Vette since parts are getting harder to come by.
I removed my PCM and installed this used PCM. I took out my GM Tech 2 Clone, opened my Windows XP Netbook that I had previously installed the TIS 2000 software (this software disk came with the Tech 2 Clone). I opened the TIS 2000 application and went to the “Service Program Application” and followed the steps to “Reprogram ECU”.
Now this used PCM obviously had a different VIN. So during the program when it prompted me to see if the VIN was correct I deleted the old VIN and entered in my cars VIN.
Then I uploaded the program for my VIN into the TECH2 Clone per the prompts, disconnected the Tech 2 Clone from my Netbook and connected my Tech 2 Clone to my OBDII port. I turned the ignition ON without starting the car and selected “Service Programming System” followed the prompts and watched the TECH 2 Clone load my VIN programming for my car.
It worked great, in fact I bought a second 1996 PCM for $150.00 and performed the same procedure and that one worked just as well!
After I used my JET DST to upload my Tune for my engine into the PCMs. The Tech II will obviously only install the factory calibrations. Now I have two spares in case my original fails.
Hope this information is helpful.

TIS2000 Application

Here is where you select Reprogram ECU.

These are the prompts for the Tech 2 setup.

First I only have a 1996 with the OBD II, this is all I could experiment with so I can’t check other years.
I think it can also work on the 94, 95 model years as well, but I could be wrong.
The TIS 2000 software comes with the Tech 2 scanner.

http://blog.obdii365.com/2020/07/21/gm-tech2-pcm-reprogramming-on-96-lt4-corvette/

GM Tech 2 Clone Purchase – Package – Programming Tips

This is advice for those have problems:

– what do you think of Tech 2 made in china?

– Is there any software close to Tech 2 to be bought which has access to all hummer h2 modules?

Many thanks all contribution from MixManSC like to share his experience with all.

Purchase:

I bought my Tech2 from China and it works great.

I cannot speak for any on Aliexpress or Amazon. I’ve seen both good and bad reviews on the ones from there.. Regardless it would not matter as again, I have no way of knowing if one from some seller on there will be a good one or not.

It is also worth spending the extra to get the case which does cost a good bit more. These come with a lot of different adapters and parts and the case makes it very nice and easy to keep it all together.

This is the kit that I ordered. It also includes the Candi module which is needed for many newer model GM vehicles.

Newest Vetronix Tech2 Diagnostic Scanner Working for GM/SAAB/OPEL/SUZUKI/ISUZU

Note: China tech2, Palmer ScanXL Pro and EASE

I’ve got 3 different scanners, a China tech2, Palmer ScanXL Pro with enhanced GM software and EASE Diagnostics with enhanced software for both chevy and hummer.

The Tech2 is the best, palmer ScanSL Pro is very good at pulling trouble codes from all GM modules but does not have bidirectional control while EASE is good software its had issues with pulling all codes from all modules but it has bidirectional capabilities. The Tech2 can do it all up to 2013 along with programming modules if you have the software and security key up to 2007 models.

Package:

The “Candi” module is needed for GM vehicles with the newer electrical systems. On an H2 the “Candi” module would be required for an 08/09 model. I’m not sure what years on an H3 and other GM vehicles.

On any of them you must have the 32MB card (GM North America)

The plastic case adds to the cost but is worth it as the full kit is a lot of separate pieces and the case gives you one place in a custom fitted case to keep it all neatly versus all dumped into a cardboard box.

The TIS2000 software/USB Key are really NOT needed unless you want to reprogram ones of the many various computer modules in your vehicle with software updates. To use the TIS2000 software you will need to install it on an older PC running Windows 98, Windows XP, or Windows 7 (32 bit) and will need a serial port to connect to the Tech2. As an example though, my 2003 had multiple modules with updated software which CAN fix problems. One I remember is my air ride module had an update that fixed the compressor running much more often than needed.

Hummer H2 Programming tips & guides:

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 as little as two days for $55.
https://www.acdelcotds.com/acdelco/action/subscribehome

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 or MDI (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.

For programming you also need to have TIS2000 running on a computer or pay GM for a 24 month subscription for their TIS2WEB (Vehicle Programming) for $40 https://www.acdelcotds.com/acdelco/action/subscribehome
The computer will need a serial port for downloading the programming to the Tech II for programming your vehicle.
The way programming works is you connect the Tech2 to the vehicle and tell it you want to program a module. It interrogates all of the modules on the vehicle for the current versions and the VIN number. You then connect it to the computer running TIS2000, GlobalTIS, or TIS2WEB subscription and select programming in the computer. It reads the Tech2 for the vehicle info and then presents you with a list of software for all of the modules and shows you which have updated software. I recommend only doing one module at a time which is a good bit more back and forth but safer. The computer then loads the update to the Tech2. You take that back to the vehicle and connect it and it then programs the module.
The best, most reliable and safest method is to use a long enough serial cable (its uses 9 pin serial adapters with an ethernet cable to make the cable longer – so you can just use a longer network cable) and do pass-through programming. In that method the process is the same but you leave the Tech2 connected to both the computer and the vehicle at the same time. Once you select programming on the Tech2 then go to the computer and you can immediately update each module right from the computer.

There is a slightly more updated version of standalone TIS2000 floating around on the web which has additional updates that has software updates for vehicles through 2009 as well. I know just using that TIS2000 both my GMC truck and my 2003 H2 both had

a bunch of software updates available to be programmed all of which fix small issues or improve certain aspects. One example in on the older single compressor air ride like my 2003. Those would run and make small adjustments a LOT more often than needed and the software update fixed that. On the H2 the rear air ride is also one to be very careful of for doing software updates though. For example, my 2003 came with the earlier style single compressor but if it were to fail a dealership would replace it with the newer style dual pump compressor. Programming would still think its the original style and would attempt to program it and that would actually cause it to fail. TIS2000, (Global, Web, etc) will warn you about this sort of thing though so just heed all warnings and follow instructions and its fine.

The programming aspect is not needed or required to use the Tech2. The Tech2 still gives you a TON of diagnostics and tests that NO other OBD device has including things like the air ride module, detailed BCM functions, basically you can control and test every computer module in the vehicle.

btw, HUMMER is not shown in the GM vehicle list… because that little short list is incorrect and only shows a few of the earlier than 2007 CAN bus vehicles.

Summary:

Cannot really compare software with a gm Tech2 as that is comparing hardware to a program. That being said, there is a software side of things that work alongside the Tech2 which is the TIS2000 software. Getting that working is a bit of a project in and of itself as the software is old and seems to work best on Windows XP. The TIS2000 software is really not needed to use the Tech2 though – that is needed if you want to update the firmware in the various modules in your vehicle like the ECU, BCM, DDM, etc.

Simply put though. There is no other tool that can do everything on Hummer H2 that the Tech2 can do. It is the only tool with things that are very specific like calibrating the rear air suspension module. Other tools can be very powerful but that are mostly just have features that are common to many vehicles and will not have things that are specific to just one or two vehicles.

(Many thanks MixManSC)

GM Tech 2 self test for CANdi, RS-232, VCI, Keypad

Manual: How to do GM Tech 2 clone scanner self test step-by-step

VCI self test

Keypad self test

CANdi self test

RS-232 self test

Follow the instruction in detail…

Part 1: Tech2 VCI self test

Insert the GM card

Connect the adapter and ready for the self test

Go to the main menu and select F4: Tool options

F3: Self test

Exit to continue

Select the function for self test

Here, press F2: Automated VCI

The VCI module self test result

Passed VCI selftest.

Part 2: GM Tech II Keypad self test

Go to the Tech 2 menu and select F4: Tool options

Then F3: Self test

Before running the Tech 2 self test:
(1) Candi cannot be connected
(2) Aldl loopback should be connected (GM3000109)
(3) Failure to follow these instructions may invalidate the self test

F3: Selectable main pcb

Press Keypad

And press key

Note: In the last image, the actual key pressed is F0 and the final result is PASS – that’s normal

When you test the keypad, press F0-F1-F2-F3-F4-F5-F6-F7-F8-F9-EXIT-ENTER-in a good order! DO NOT SKIP ANY ONE.

Part 3: Tech 2 scan tool CANDI module self test

VERY IMPORTANT: Pls make sure of the connection of the OBD adapter, OBD main cable, CANdi module, Tech 2 scan tool and the power supply — ALL should be good

The power should be connected by the OBD port for  CANdi self test.

F4: Tool options

F7: CANdi diagnostics

F0: POST result

Test status

F1: Self test

CANdi self test result

Pass selftest

There are two test results for CANdi module.

The one is Figure 8, and the other is Figure 10.

Part 4: GM Tech2 scanner RS232 self test

Check the connection before R232 self test

F4: Tool options

F3: Self test

Exit to continue

F3: Selectable main PCB

F2: Rs-232 loopback

Rs232 test: Passed!

GM Tech 2 scanner tech support from http://www.obdii365.com/

http://www.obdii365.com/service/gm-tech2-vci-keypad-rs232-and-candi-self-test-guide-109183.html

2009 Chevrolet HHR key fob programming with Tech 2 clone

Success! Have tested Tech 2 clone for 2009 Chevrolet HHR key fob!

The detail… Here you go.

Install the GM Tech 2 scan tool
Turn ON the ignition with the engine OFF
Power On the Scan Tool
Hit Enter
Main Menu > F0: DIAGNOSTICS

Vehicle identification – Model Year > (9) 2009

Vehicle identification – Product Type > Passenger Car

Vehicle identification – Product Make > (1) Chevrolet

Vehicle identification – Product Line > A

Diagnostics > F1: Body

Body> F5: Remote Control Door Lock Receiver

Remote Control Door Lock Receiver > F5: Module Setup

Module Setup > F1: Program Key Fobs

Program Key Fobs > F0: Invalidate all key fobs

Instructions:

The procedure will replace the previously programmed key fob with the key fob requiring programming.

(Follow Instructions, if it don’t work repeat entire procedure)

All desired key fobs must be present.

When the first key fob is programmed, the module will erase the rest of the slots.

The module will fill slots until [Done] or [Exit] is selected.

Note: Only select [Start] once. If the procedure is started again, the control module will start over.

Job’s done! http://www.obdii365.com/producttags/gm-tech2.html

http://www.obdii365.com/service/program-2009-chevrolet-hhr-key-fob-with-gm-tech2-107178.html