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I figure it will be a little more complicated than that, but it is a start... Just waiting on my buddy, to get the password and username... then will take a peek

Kevin

Okay, here is the status of the stuff I have had my buddy working on....

He has been hard at work analyzing the GM Techline programming software. We are going to try the approach of editing the...

Okay, the Ease Programmer uses the GM SPS software to reprogram the PCM to stock conditions only. There is no software Yet to allow us to upload our own PCM edits. The serial datastream is not...

Okay here is what i have found, now for you mathematicians to find a logrithm to make sense of it all


Seed- 61CD- 0110 0001 1100 1101
Key- 9C3D- 1001 1100 0011 1101

Seed- 703C- 0111 0000...

Magnus, I think I found your Seed and KEY for a GTP

Request: 4/14/2003 9:42:12 AM.078125064 (+0.0000000000 seconds)

30 00 05 6C 10 F0 3C 08 1B 0..l.ð<..

Answer: 4/14/2003...

Well all the commands so far from sniffing the port are repeatable, I am working with my best friend... a Software programmer, he is gonna help me write some software to utilize it with my own...

It is extremely feasible to write your own software for the ease programmer.. ;)

Kevin

I am not sure if those commands are directed completely on to the obd2 bus... I don't know if anything there is just for the programmer.. If they were directed on to the obd2 bus then it is possible...

Hey magnus, do you have the GM expertec software for you tech II? If you need it let me know...

One other thing, the GM expertec only sends 4112 bytes of data at a time, that includes the command,...

actually, there is a interface program for the device, then it uses GM SPS software... I sniffed the serial port, while doing a program to the PCM. And that is what I came up with...

I am having...

Well, everyone for shitz and giggles, I decided to monitor the serial port on my computer during a program of a PCM using the programmer that I have.. I found some very good news.. Here is just a...

Okay, now that the holidays are over, let's hit this up..

I am currently building a pass thru for my programmer, so I can dump out the data sent. I do need to order the BBLVD, but that is gonna...

I believe you can send the command via the terminal program if you want... Not sure though doesn't really say

Kevin

Well in actuallity, you wouldn't learn anything by listening to the RS232 side, because that is just the way your computer communicates with the tech 2 or other device... if we want to have a device...

I just read the datasheet for this Product.. it should work for every thing we need.. should also be able to sniff the tech 2 or other device to see how it communicates with the pcm.. I don't see a...

So here is some information I have found seem like from a very reliable source....

Mode $01 - Request Current Powertrain Diagnostic Data
Mode $02 - Request Powertrain Freeze Frame Data
Mode...

That's good because I have been trying to figure out how in the heck I was gonna write the software.. I mean I can write the software for the MCU but the software to take the dumps and save em to...

The Atmega128 doesn't directly support VPW but used in conjunction with a transciever (MC33390) you could in effect use it as a sniffer.. Every thing I have read tells me that the communication with...

Here is what I know, 99+ have the same PCMs... I have been able to successfully flash a 99 PCM with a 02 code.. no problem... 98 uses a completely different PCM.. I attempted to flash a 98 code into...