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Reload this Page INFO ON GM ECU MODE 2 AND 4. EPROM DUMP AND MESSAGE SENDING. TUNERPRO
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Old 08-17-2009, 02:48 PM   #1
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INFO ON GM ECU MODE 2 AND 4. EPROM DUMP AND MESSAGE SENDING. TUNERPRO
I am working with A GM ECU through Tunerpro. I have established communications with mode 1 for diagnostic chit chat. I would like to execute an EPROM dump with mode 2. Wondering if anyone has done this with Tunerpro?

Also, I know the ECU I am working with (diesel) supports mode 4 type functions where someone can reset the initial timing. I am not sure yet how to do this as there is not much info online about it. Does anyone know what I am referring to and how execute it?
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Old 08-17-2009, 06:10 PM   #2
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Re: INFO ON GM ECU MODE 2 AND 4. EPROM DUMP AND MESSAGE SENDING. TUNERPRO
Here is some Mode 4 info.
IDK what ECM/mask you are working with but will give you some idea how it works in this application.
I don't believe the current TP can output the string lengths needed.
Most times people are using custom written code to work with this.
http://www.thirdgen.org/techboard/di...e-4-165-a.html (ALDL MODE 4 '165, '730, '727)
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Old 08-17-2009, 06:10 PM
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Reload this Page INFO ON GM ECU MODE 2 AND 4. EPROM DUMP AND MESSAGE SENDING. TUNERPRO
« byte writing to memory via ALDL mode 4 | HELP ID WHERE THE EPROM IS. Only one chip in the ECM »

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