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I didn't realize that I did not do a write entire until afterwards, total blunder on my part. At this point I think I will purchase another ecm.

Last night I did disconnect the battery for over an hour, reconnected the battery turned on the ignition, tried to write cal and then it says Controller Unlocker: Timed Out and the same status, the...

Correct I was doing a write cal, or should I have done a write entire since I was changing to a different OS? Or did I brick this pcm?

I am in the process of adding a\c to my 01 Silverado 2500hd pcm with a fbody style a\c system. My pcm originally was under OS#12208322. The fbody is OS#12212156, so I went in the tune repository and...

You was exactly right I wasn't looking for that answer. That looks like it would involve using credits just for me to have a/c working with one pressure sensor and turning on the

fans. Instead of...

Thanks and I have no problem doing some digging but I am so new at this stuff I don't know where to start. Also, I'm not what you mean by the P01 computer? I know that I have a 0411 or are you...

Is it possible to find a Fbody and Truck pcm with the same OS number to do a segment swap with? Sorry if this sounds confusing, I'm not sure if I am even wording this correctly?

5FDP Thank you again!

Ok, I just watched the youtube video at the beginning of the segment swap post, it looks to be pretty easy. My next question is about the OS, how do I know which OS I have what to look for in the...

Ok I will do just that. Thanks for your reply!

I have a 02 LQ4, 01 truck harness, 0411 pcm. I am new to HPT and just recently swapped out my 700R4 for a 4L80E. Now the only thing I did in HPT was switched it from non eletronic trans to 4L80E, now...

And thank you for answering the VATS question.
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From what you have seen and mentioned that it's going to take more to what I have in my tune to get it started. So I would like to know what will I have to do to get it started?

Yes I know, that's why I am here looking for as much help as I can get. Can you PLEASE lead me in the right direction!!!!! And I am really greatful for the info that you have provided to me thus far.

Man, that is a big difference! But the Vats is still not in the OS. But I see it in Systems under General and I have it on None, is this correct?

Sorry for not giving the details of what I have. It's a 01 2500 Silverado 6.0 0411 ecm, 02 LQ4 block, cammed, ls3 heads and intake, 42lbs injectors. Now I had this engine running before but I...

Ok, I hope this works!

I can't seem to find out how to post my tune.

Ok, I'll post it when I get home from work.

I want to make sure that the VATS is turned off but when I go to OS it is totally blank. This is my first time playing with HP Tuners so I want to so this correctly.