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markgammel
July 26th, 2010, 06:57 AM
If I have an ecm that is for a 4.3 truck. Can I use it in a truck with a 5.3 if it has the same OS?
ScarabEpic22
July 26th, 2010, 03:33 PM
What year trucks, if the PCMs are the same then yes, just full flash the proper OS in and you're off. Cant simple take the V6 tune and run a V8, doesnt work.
markgammel
July 27th, 2010, 05:42 AM
Well I ment flash the V8 tune in before I tried to run it. I gues what I ment was Is the hardware the same as long as it has the same OS?
ScarabEpic22
July 27th, 2010, 07:08 AM
Well there's a good chance you will have to change the OS (in fact its probably guaranteed, I dont think any V6 OSs can run a V8) but the physical hardware is identical. Might have to check the pinouts to make sure the wiring is correct for a V8, but just load a V8 tune up, full flash it in, and start tuning.
markgammel
July 31st, 2010, 01:00 AM
I have a 2000 truck and a 5.3 I have a ecm out of a wrecking yard 01 s-10 with 4.3. I am trying to get an ecm with lean cruse. I have a tune file for a 01 5.3 with the same OS as the 4.3. will the ecm work?
ChipsByAl
July 31st, 2010, 01:33 AM
The PCM's are basically the same. I would not concern myself with the OS for the 4.3 truck. Just full flash the wrecking yard PCM with the 01 5.3 tune file. You don't need a PCM with the lean cruise, it can be enabled with EFI_Live with the correct base file.
Al
markgammel
July 31st, 2010, 02:58 AM
The PCM's are basically the same. I would not concern myself with the OS for the 4.3 truck. Just full flash the wrecking yard PCM with the 01 5.3 tune file. You don't need a PCM with the lean cruise, it can be enabled with EFI_Live with the correct base file.
Al

Thanks I will try it today and let you know.
markgammel
August 2nd, 2010, 01:54 AM
The engine is flooding real bad. It will not start. So sofar it hasn't worked.