gm os to custom os

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January 19th, 2006
69camaro5speed

gm os to custom os

i was looking over the custom operating systems trying to figure out what matches my gm operating system my stock one is 12216125 i dont see a custom one that matches mine or maybe i havent figured it probly more like it anyone know what custom operating system matches that looking for sd 1 bar system its a 2002 8.1 avalanch need to figure this out so i can test this weekend trying to lurn the custom operating system on my stuff have a twin turbo motor coming up to do any help would be great thanks
January 19th, 2006
GMPX

That one was never converted into a 2bar O.S because it was only used on flex fuel (E85) trucks, for some reason, not many folks want to boost these!!.
Anyway, if you are not running the flex fuel thing then you can find another 2002 O.S that we have done that was used with that motor.
Off the top of my head I am not sure which ones they are, but I'm sure someone else will chime in.

Cheers
Ross
June 25th, 2007
1SlowHoe

Quote:

Originally Posted by GMPX

That one was never converted into a 2bar O.S because it was only used on flex fuel (E85) trucks, for some reason, not many folks want to boost these!!.
Anyway, if you are not running the flex fuel thing then you can find another 2002 O.S that we have done that was used with that motor.
Off the top of my head I am not sure which ones they are, but I'm sure someone else will chime in.

Cheers
Ross

So if I know I will never run E85 (and I wont) I can use another 2002 OS? Such as??? You wouldn't happen to know where I could find a 2002 (512kb) OS that has a 6.0L and a 4L80E already in one file? I run the 12216125 OS currently and cannot find a OS with a 4L80E in it. I am about to complete an 80E swap into my Tahoe and I'm not sure there is an OS out there that will let me run it :Eyecrazy: :nixweiss:
June 26th, 2007
joecar

I would say do this (and let anyone correct me):

Find a 12212156 OS that is used on a vehicle with a 4L80E.
Then copy all the tables (table-by-table) from your 12216125 to 12212156.
Flash in your new 12212156 and see if your truck runs and shifts.
If it does, then follow the COS tutorial to upgrade to COS5.
June 26th, 2007
joecar

1 Attachment(s)

From www.holdencrazy.com here is an 12212156 OS running an 4L80E (I "annotated" the filename so I could remember the trans)...
June 28th, 2007
1SlowHoe

What about OS 12208322? It seems to have everything I need 6L, 4L80, traction control, and Electronic Throttle Body. It is from a 2001 3/4 ton 2500 Silverado 4X4.
My Tahoe is 2WD but I don't see how that should matter.
So, all I need to do is copy every table from my current tune to the new OS (one at a time :bawl: ) and leave the transmission segment alone, correct?:help2:
What would upgrading to COS5 do?
June 29th, 2007
joecar

Quote:

Originally Posted by 1SlowHoe

What about OS 12208322? It seems to have everything I need 6L, 4L80, traction control, and Electronic Throttle Body. It is from a 2001 3/4 ton 2500 Silverado 4X4.
My Tahoe is 2WD but I don't see how that should matter.
So, all I need to do is copy every table from my current tune to the new OS (one at a time :bawl: ) and leave the transmission segment alone, correct?:help2:
What would upgrading to COS5 do?

You could try 12208322, but you can't then jump to COS5 from there;
COS5 has boost/nitrous tables, and a TP-vs-RPM VE table in case you want a big cam;

yes copy all tables, table-by-table, including the transmission tables;

it's the transmission "segment" (which contains the tables you see and other "stuff") that must match the transmission;
so whatever you copy "from" -> "to", the 4L80E segment must end up in the "to".
June 29th, 2007
1SlowHoe

Quote:

Originally Posted by joecar

You could try 12208322, but you can't then jump to COS5 from there;
COS5 has boost/nitrous tables, and a TP-vs-RPM VE table in case you want a big cam;

yes copy all tables, table-by-table, including the transmission tables;

it's the transmission "segment" (which contains the tables you see and other "stuff") that must match the transmission;
so whatever you copy "from" -> "to", the 4L80E segment must end up in the "to".

I think I get what you are saying.
I take the OS that was built for a 6L/4L80E and use that as my new OS. I then manually copy all of my "non-Transmission related" tables from my current OS into the new OS with the 4L80E built into it. So now all my fueling, PE, VE etc... tables are in a tune that runs a 4L80E transmission.
Am I close?

Another question. I remember once playing with the tuner and was going to do a complete reflash and it warned about doing it throught the ODB port. It recommended that I use a bench harness, which I don't have. Do many people reflash the PCM with a new OS with no issues or is it a risky thing to do?
July 13th, 2007
1SlowHoe

5 Attachment(s)

I am at a loss. The PCM acts as if it is seeing 0 TPS movment. The truck will not idle unless I push the gas. If I floor it I will see about 2000rpm and the truck will barely move. It feels as if its in reduced power but I dont get that DTC or message center light. If I flash the original tune in, which runs the 65E, everything is fine. The throttle tachs right up and idles great. Of course I didnt try to drive it because of the transmission file differences. Whatever it is, it is in this tune.
The only thing I can think of is the VIN is not the same in the new file and thats an issue. But if it were a security thing it shouldnt run at all right? Or, this OS requires different voltage signals to the TPS. This OS I am using is from a 2001 HD Silverado.
I have attached a couple of logs and the tunes. Ignore the AFR, I didnt have that hooked up except for the last log named 80E3.
Please help
LOGS:
80E1 is a startup log and holding the pedal to keep it alive. Ignore AFR.
80E2 is a startup log and holding the pedal to keep it alive. Ignore AFR. Different PID selection
80E3 is the same but with the AFR reading.
TUNES:
Chris 02 HO is my 65E dyno tune that works well
Working 80E file_Improved is the file that is in the truck and the logs were made from.
July 13th, 2007
1SlowHoe

Every one. My TPS % sits at 0 even when I floor the gas :nixweiss:
I load my old 4L65E tune and it revs right up if I press the pedal.
July 13th, 2007
joecar

Quote:

Originally Posted by 1SlowHoe

Every one. My TPS % sits at 0 even when I floor the gas :nixweiss:
I load my old 4L65E tune and it revs right up if I press the pedal.

I was asking if you copied all your engine tables, and then I thought you would have... :)

I'll look at your files over the weekend...
July 13th, 2007
1SlowHoe

Thanks.

I copied everything except tran diagnostics and calibration. One at a time.
Would the VIN being wrong have anything to do with it?
One tune says OS ID: BD and the other says OS ID: AM
One tune says BCC: DLAC and the other says BCC: DMNP
Is that an issue?

I'm pretty sure the problem is related to the TPS sensor.
I have to turn in my rental car Monday. I you find anything please let me know as soon as you can.
Thanks again:cheers:
July 13th, 2007
joecar

BTW: you still have to copy all your old trans tables into the new trans segment.
July 13th, 2007
1SlowHoe

I dont understand that. How Do I do that?
Same as I copied the engine tables?
I figured stock 80E settings would work fine until I can tweak them.
Do I have to use the "Copy with lables" and paste with labels"?
July 13th, 2007
joecar

The trans segment contains the tables you see and some other "stuff" you don't see; so you still copy the tables you see into the new segment (table-by-table individually).
July 13th, 2007
1SlowHoe

Ok, I will work on that tonight. You think that could have anything to do with my tps/no power problem?

What does "with labels" mean?
July 13th, 2007
1SlowHoe

Hmm. I am looking at the tunes. Why would I want to copy trans shift pressures, shift at vss, and shift at rpms etc...from the 65E tune to the 80E tune? All those tables would be incorrect for the 80E trans.:nixweiss:
Or are you talking about copying the diagnostics portion?
July 13th, 2007
joecar

Quote:

Originally Posted by 1SlowHoe

Ok, I will work on that tonight. You think that could have anything to do with my tps/no power problem?

What does "with labels" mean?

"with labels" means that the column/row label values get copied also, and when you paste the columns/rows are lined up to match the table being pasted into (so the pasted cells go to the correct locations).
July 13th, 2007
joecar

Quote:

Originally Posted by 1SlowHoe

Hmm. I am looking at the tunes. Why would I want to copy trans shift pressures, shift at vss, and shift at rpms etc...from the 65E tune to the 80E tune? All those tables would be incorrect for the 80E trans.:nixweiss:
Or are you talking about copying the diagnostics portion?

Oh...

Arn't you copying from your old 80E tune file (the one that cannot migrate to any COS) to
your new 80E tune file (the one that will migrate to a COS)...?

lol... I missed a few sandwiches... :D
July 13th, 2007
1SlowHoe

:muahaha: Thats why we arent on the same page. No worries.
I swapped from a 65E to a 80E trans. There is no truck that runs my OS that has a 80E trans in it. I had to swap OS' to one with a 80E built into it. I copied all my non-trans tables into the new OS and flashed it into my PCM. Now I get no TPS response. If I reflash my old tune for the 65E back into the PCM the TPS works fine but of course the trans doesnt respond correctly. I'm missing a table or a setting somewhere in the tune.
July 14th, 2007
joecar

Ok, seems to me the problem is that you need the old engine segment and the new trans segment...

but you can't copy a segment between files unless the 2 files have the same OS ids...
July 14th, 2007
1SlowHoe

Quote:

Originally Posted by joecar

Ok, seems to me the problem is that you need the old engine segment and the new trans segment...

but you can't copy a segment between files unless the 2 files have the same OS ids...

Correct.
I tried OS 12212156 to day with no luck. The tune does not see the TPS at all. It sits at 0%. I can unplug the TPS and start the truck and it doesn't even know i did it. If I load the old tune for the 4L65E into the truck and unplug the TPS the engine goes into REDUCED POWER instantly. Somehow the new OS' with the 80E are not seeing my TPS.
July 15th, 2007
joecar

Problem solved, see here: showthread.php?p=51186#post51186
July 15th, 2007
1SlowHoe

Yep. Found the same OS as mine with a 4L80E in the file. Did a segment copy and it worked great!
July 15th, 2007
joecar

Quote:

Originally Posted by 1SlowHoe

Yep. Found the same OS as mine with a 4L80E in the file. Did a segment copy and it worked great!

Where did you find it...?
July 15th, 2007
1SlowHoe

In the damn tune repository.:doh:
It was an 8.1L engine file so I just skipped on by it. I was looking for 6L engine with a 4L80E. I was kicking myself after Ross/Paul pointed it out to me.