Swap OS from 99 to 02
01-26-2019, 09:04 AM
#1
On The Tree
Thread Starter
Swap OS from 99 to 02
I’ve been reading about how the tunes in the 99-00 trucks have issues with false knock when you add long tubes and a cam. I’ve also seen where people said you can physically swap the PCM for one from a newer model. I have HPTuners and from what I’ve seen it is possible to swap the tune from an 02 onto my 99’s computer. My only problem is I can’t find an explanation of how to do it. My buddy has a 2002 with a 4.8L so that’s a possibility. Anyway if someone has a link or could explain it to me Is greatly appreciate it. I’d like to go ahead and get this done and running good before I do the other stuff.
Thanks,
Joey
Thanks,
Joey
01-26-2019, 11:45 AM
#2
100% Redneck
If you have the "Black Box" PCM and you want to swap in a newer (0411) 01-02 PCM you'll also have the upgrade the engine wiring harness as the "Black Box" PCM has different connectors. If you're sure you are getting false knock, like adding race fuel or octane booster and still experiencing knock... you can desensitize the knock sensors in HP Tuners.
01-26-2019, 05:00 PM
#3
Should be as simple as finding the 2002 OS that you want to use and doing a write entire with that file over your stock 1999 file.
It may cost you several credits to do this. Also if the VIN means nothing to you, then that is good because single VCM licenses can't change the VIN.
It may cost you several credits to do this. Also if the VIN means nothing to you, then that is good because single VCM licenses can't change the VIN.
01-26-2019, 05:58 PM
#4
On The Tree
Thread Starter
Ok so I instead of using the write calibration I would use write entire. I’m not sure what the black box is but I have a p01. As far as I know the p01 was in the 99-02 trucks but the OS changed in 01. I believe they went with the p59 in 03+ trucks that have drive by wire.
I dont have any false knock now. I have just read things about the 99-00 stock tunes not being good when you run long tubes and a cam due to false knock. I am finally after many years of waiting about to start buying stuff to get this truck the way I want it and I figured since I already have HPTuners I’d like to have a solid foundation in place for when I do start adding hard parts.
I appreciate your help so far.
Joey
I dont have any false knock now. I have just read things about the 99-00 stock tunes not being good when you run long tubes and a cam due to false knock. I am finally after many years of waiting about to start buying stuff to get this truck the way I want it and I figured since I already have HPTuners I’d like to have a solid foundation in place for when I do start adding hard parts.
I appreciate your help so far.
Joey
01-26-2019, 06:44 PM
#5
Operating systems changed yearly and sometimes twice or three times in the same year depending on model of vehicle and for what reason GM needed to a new calibration.
Like a 1999 silverado file will have a different OS number than a 2000, same all the way to 2002. Then 2003 went drive by wire in the Silverado/sierra but was already DBW in 2001/2002 in the denali yukons and some suburbans. The OS's still changed yearly on those as well.
Early OS's have fewer tables and are less sought after because of it. Like a 1999-2000 OS will have 2 VE tables factory, then they switched to 1 primary VE table for 2001+. It's small things like that, that they improved on.
And yes, any OS change must be a write entire or you will brick the computer. Doing regular changes is a write calibration but any change of OS be it from another file or applying a custom OS like a 2 or 3 bar operating system must be done with a write entire.
Like a 1999 silverado file will have a different OS number than a 2000, same all the way to 2002. Then 2003 went drive by wire in the Silverado/sierra but was already DBW in 2001/2002 in the denali yukons and some suburbans. The OS's still changed yearly on those as well.
Early OS's have fewer tables and are less sought after because of it. Like a 1999-2000 OS will have 2 VE tables factory, then they switched to 1 primary VE table for 2001+. It's small things like that, that they improved on.
And yes, any OS change must be a write entire or you will brick the computer. Doing regular changes is a write calibration but any change of OS be it from another file or applying a custom OS like a 2 or 3 bar operating system must be done with a write entire.
01-26-2019, 06:54 PM
#6
On The Tree
Thread Starter
Awesome thank you so much. I think I get it now. I feel stupid for asking but I guess what I need to do is find a stock file from a 2002 2wd with a 4.8l / 4L60e, then get that file saved, license it, then write the entire thing to my truck?
01-26-2019, 07:57 PM
#7
Yeah, you could it that way.
It might cost you the 2 credits to do that and another 2 credits because you will be creating a new VIN/OS pair on a different computer. If you can use a dealership scan tool to flash in a 2002 OS, then it'll only be 2 credits.
Or just buy a computer from a 2002 truck, license that for 2 credits. You can copy/paste stuff to make it a 4.8 file in a matter of seconds.
It might cost you the 2 credits to do that and another 2 credits because you will be creating a new VIN/OS pair on a different computer. If you can use a dealership scan tool to flash in a 2002 OS, then it'll only be 2 credits.
Or just buy a computer from a 2002 truck, license that for 2 credits. You can copy/paste stuff to make it a 4.8 file in a matter of seconds.
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