I've been asked to help with a LS3 engine / 4L80E trans swap into a daily driver.
For the moment I'm focusing on using a 2008 E38 ECM / T42 TCM. The 2008 Corvette came with the LS3 and E38 ECM. Some 2008 GM Pickups used the T42 with the 4L80E.
The question I'm wondering about is if the Operating System for the 2008 Corvette E38 ECM will work the the 2008 Pickup T42 Operating System?
Thanks in advance,
dave w
I've changed directions, I'm focusing on factory Gen IV / T42 files. http://www.gearhead-efi.com/Fuel-Inj...80e-cal-needed
dave w
It should. A number of years ago I tuned a 67 Nova that had a LS3 with an E38 that was running a Corvette OS. This particular car had a 4L60-E with a T42 and it had a 2008 truck OS on the TCM. Worked fine, but had a trouble code for transmission p/n switch or something like that (I can't remember for sure).Originally Posted by dave w
I looked recently at some e38 files. They have settings for transmission type, gear ratios and some other stuff.
I can try to set up something for you if you want to experiment. I will need the bin of the ls3 you have.
2013 Camaro L99 .bin attached.
dave w
Attached are the 2009 C2500 .bin files (converted from .cal link previously posted above) I think I will modify for the LS3 / 4L80E engine and trans project.
I'm able to open the E38.bin file with EFI Live.
EFI Live will not open the T42.bin file, but TunerCats OBD2 does. What the heck is happening with WinFlash OBD2???
dave w
What do you mean? I use it all the time.
I also use WinFlash all the time.
I don't understand why EFI Live won't open the T42.bin? EFI Live is opening the E38.bin.
dave w
I thought you were talking about Tuner Cat WinFlash OBD2. You saying that is what EFI Live calls their editor too?
EFI Live Error message attached.
dave w
Sorry I've read both of your threads about a using a LS3/4L80 E38/T42 and am completely lost at what you are attempting to do. I see nothing in that pic about WinFlash OBD2.
I'm wondering if the information in this gearhead-efi thread is accurate? The members who posted the information below are not active members. I'm thinking "ETC" is Electronic Throttle Control?
dave w
http://www.gearhead-efi.com/Fuel-Inj...ls3-cal-needed
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Buzz
"Unless the E38 already has a 2009 Corvette calibration loaded, you can't flash in a 2009 Corvette *.cal and expect the ETC to be functional.
By example - if the E38 is from a truck / van / SUV, or is new from GM - it must have the 2009 Corvette calibration loaded with a Tech 2 first. Only a Tech 2 can load the ETC programming - no tuning software can read this portion of the ECM, as it is a "Write only" section - and therefore has nothing to write to this portion of the ECM."
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Busta9876
"This can be a problem if you are switching applications with a particular ECM. There are 8 calibration modules in these calibrations. Modules 7 and 8 are used by a secondary microprocessor in the ECM and are not typically used in the calibration process. These modules are not read, modified or reprogrammed by the WinFlash OBDII program so the program will not allow you to program an ECM with a particular calibration file if the modules 7 & 8 associated with that calibration are different from the modules 7 & 8 that are currently stored in the ECM.
The GM system does reprogram modules 7 & 8 so you can change applications using that. SO what you'll need to do is reprogram the ECM with the stock calibration that you want to start with using the GM system. Then you'll be able to tune it with the OBDII Tuner program."
Sorry about the confusion . . . my problem is EFI Live. Most times EFI Live will open a .bin file, but my EFI Live is not opening the Read T42 1GCGG25K791142143.bin.
It's a long shot, I was hoping someone would be willing to try opening Read T42 1GCGG25K791142143.bin with EFI Live.
dave w
I've never used EFI Live on Gen 4 stuff. Only Gen 3. When you read a ECM/TCM combination with EFI Live dies it create 2 separate files like TC OBD2 does or does it combine both controllers into one file like HP Tuners does?
This one can be opened. I added some extra data that is not used to match the chip size.
SLave must match main OS or you will get all kind of troubles.
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