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What would be the best route to flash a 2wd OS to the ECM and TCM? Would it be beneficial to send it out? If so are there any suggestions on who or we’re to send it?
Thanks.

After the complete rewrite it didn't work until a few minutes later. Weird!
Thanks a bunch!!! I will report back !!

I deleted all of the 4wd stuff from the harness so there is no way for it communicate that information between the ECM and TCM.
So this thing has been doing this for a couple of years now and I've...

No I didn't not think of the gps thing and No there are no codes.

Ok thanks super appreciated! I will give it a try.
It does have an ISS.

I will report back on this! Hopefully it will get resolved so some can learn from my mistakes or what to do if this happens...

I don’t know how it would differ that’s why I’ve asked for help.
I thought the Editor file would give the specifics of my configuration.
It’s a 5.3 backed by 4i65e. It was a complete pullout from a...

:shrug:
That’s what I’m trying to find out?
Would it be advisable to rewrite the TCM to a 2wd OS? Not sure? You would think that could be the problem. Maybe? Someone has had to run across this.

It's the same thing just that the output shaft on 2wd is longer than a 4wd same thing just longer no transfer case. It's just a mechanical adjustment same thing but different. Output shaft is longer....

Confirmed 25" tall tire and diff is a 3.90. I can see the relevance to this question but its kinda off of what the original topic was.
Which is dose anyone think there is a problem with this being...

Ahhh no I don’t believe that’s correct. I’m pretty sure it’s 26 or26.5

I was able to make a couple of short scanner files.
This is a LS swap into my 65 Nova. I'm looking for help!
It's a long story so I'll keep it short. Had it to a tuner to sort out the shift points....

So I'm going to post this and hopefully wont get bashed to hard. First off I'm a super green rookie with HP tuners and tuning in general.
[ATTACH=CONFIG]137922
I'm trying to narrow down why the...

Anyone? Hello

Did this ever get resolved? I have the same problem