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vogner16
September 8th, 2021, 02:37 PM
From the latest update of Duramax 2p8L E98 DSP4 Userguide it shows some conflicting info.

listed OS's are all in the 5 series like the 2016-2018 trucks have but notes for "latest OS for up to 2019" does not include the OS of my truck 24000143.

I remember reading in the past DSP4 would be added for the 2019 and newer trucks but as per that userguide now it wont?

im confused on the whole support of DSP4 at this point. will 2019 E98's get it? does it have support now that i just cant seem to find the tab for? running the latest beta2 software...
GMPX
September 9th, 2021, 11:06 AM
DSP4 for this ECM was last worked on in August 2017 looking at our records, GM have since dumped out a lot of updated OS's like all the ones starting with 24000xxx. At this stage we have not assessed the viability of converting all those to DSP4.
So the simplified answer is that nearly every OS past 2017 does not have the ability to convert to DSP4.
vogner16
September 10th, 2021, 06:36 AM
Thanks for the reply. makes me sad i wont be able to make my truck DSP4.

Just to be sure :) You cant do a full flash of a dsp4 OS based tune on a 2019... that will brick the ECU right? because the 5 series OS's are not supported on the newer hardware of the 2019.
GMPX
September 10th, 2021, 10:01 AM
Yes restrictions are in place so you can't exchange OS's from different year models.
Whozzat
September 10th, 2021, 11:13 AM
Yes restrictions are in place so you can't exchange OS's from different year models.

Mine is a 2016 OS 24000173 and it doesn't appear to support dsp4 either, unless i'm missing something.
GMPX
September 10th, 2021, 03:42 PM
The DSP modifications are done on an OS by OS basis, regardless of the year model.
For example, the 2017 Colorado has 7 different OS's with 24000174 being the most recent GM have released, but 55503875 is the last one of this year model we did DSP4 conversions for.
Whozzat
September 12th, 2021, 04:08 AM
The DSP modifications are done on an OS by OS basis, regardless of the year model.
For example, the 2017 Colorado has 7 different OS's with 24000174 being the most recent GM have released, but 55503875 is the last one of this year model we did DSP4 conversions for.

Is it possible to load a different OS on a 2016?
GMPX
September 12th, 2021, 10:40 AM
Head to this website - https://tis2web.service.gm.com/tis2web
Enter in the VIN and navigate through to the ECM OS list, this is what we would allow to be flashed.
Whozzat
September 12th, 2021, 12:19 PM
Whole list of OS's of which I have none. Where can I find the OS's in this list?
24000173 000079F5 New software with diagnostic enhancements for DTC P2459.
55508080 00007AF0 New software with diagnostic enhancements for DTCs P11B3, P11CC, P1476, and P22FE.
55503892 0000A5CD New software with diagnostic enhancements for DTCs P2A00, P11CC, P11B3, and P24B1.
55493455 000060CF New software to ensure proper compliance with emission standards.
55488096 0000FEB5 New software to ensure proper compliance with emission standards.
55493454 0000014A New software to correct problem occurring at the assembly plant. Does not address any service issues.
55493451 00006B16 New software for start of production
55487913 00002711 New software for start of production.
55487907 0000B38C New software for start of production.
55487908 000030D9 Main Operating System.