ECM TCM Compatibility?

[village_idiot]

I'm helping a friend with a swap in an older car. He handed me this E38/T42 to bench flash a startup tune into, and I noticed they have been taken from 2 different vehicles. What needs to be done to make this work properly? (I have a text sent to see if he has the matching tcm to the ecm, just no reply yet)

Engine - 2011 Silverado 6.2L
ECM - From same Silverado as the engine
Trans - I was told from an 06 or 08 (4L60E)
TCM - Unknown to me exactly what it is from, but details in file attached

I read the attached file on an ECM/TCM bench harness I have. If I need any more info from them, let me know. 1 - Andre B 6.2L 4L60E Stock File.hpt

[blindsquirrel]

For sure the 2011 ECM OS won't communicate with a '06/'08 TCM OS. And, all the 2011 6.2s were T43/6speeds.

You should be able to find a ECM OS for that Service Number that's compatible with a T42, and the TCM will need to be a 2010-up for comms to work.

I'd love to be able to do my usual SPS-fu with your VIN and all that but I have Comcast and live in Mississippi and it rained on Sunday, so regular interwebs are out until the end of the week. It's not like this in other places, is it? xD

[village_idiot]

Squirrel, to make sure I?m clear? hardware wise, my ECM is okay, and I need a 2010+ TCM?

Did your Internet get any better? Lol

[blindsquirrel]

I am forced to use my tuning laptop tethered to a goddamn phone, so internet feels like 1998. No real non-phone-based email. Google won't allow an IMAP email client to connect because "security" even though I have told the securitybot multiple times that "YES THAT IS ME TRYING TO CONNECT OK?"

The TCM hardware you have is fine, I think they are all the same and all interchangeable. You can look up interchange somewhere like Rockauto once you have some OS candidates. The interchange list is absolutely huge and any that don't swap are probably some weird non-RWD application.

Now see, not having my usual resources is causing me to give out bad info. Looking now, 2011 Silverado could have had either 4 speed or 6 speed even with the 6.2L. So files with the TCM OS you need should be in the repository somewhere. Look up the VIN from that ECM, see if SPS's TCM file is a 6 or 4 speed (search the OS ID it shows you).
https://tis2web.service.gm.com/tis2web/

[village_idiot]

24256125 is what the TIS search showed, and for a 6spd

That's why he said he did not keep the original TCM (he did not know about compatibility issues, and it was a 6spd truck, so he went online and bought a 4spd one thinking that was the solution)

[blindsquirrel]

I have a 2011 4.8L/4L60 Silverado in my file-stash, so they are definitely in the repository. Harvest the VIN and SPS them. Copy back in the differences from the 6.2L file.

[blindsquirrel]

Utterly meaningless update:
After 5 days, I discovered a hidden menu in the phone-thing's wifi hotspot menu for USB tethering, so I finally have the wifi-less desktop on the interwebs. Thanks, code nerds, for making things more difficult than they need to be. That menu can only be accessed via the notification bar pulldown thing and not from anywhere on the page where you enable/disable the wifi hotspot.

Will real interwebs be back tomorrow as promised, or does Comcast's 'Friday' really mean 'Maybe Wednesday If We Feel Like It'?

[village_idiot]

Boring iPhone user here, but my phone hotspot to laptop internet operates the same as my home WiFi?

[blindsquirrel]

I'm the last person on earth still using an 11-year-old Galaxy SII, so I shouldn't be surprised by difficulties. Though I doubt the current tech has really become any more rational since then.

It seems (somewhat, yes, I'm being cynical) Apple developers expect their users to be blue haired old ladies, and Android developers expect their users to be Unix sysadmin gods, and there's nothing designed for anyone inbetween those two demographics.

[village_idiot]

I bounced back and forth between Apple and Samsung for years. Still debate on going back to Samsung for some things that just irk me, but Apple just plain works. Just speed tested it at 145mb on cellular in a smaller city. 330mb on my WiFi. My laptop connects to it with the same speeds via the hotspot wirelessly so I cant complain

[village_idiot]

We are exchanging the 08 TCM for a 10+ model. Does anybody have a good OS for a 2011 6.2L with a 4L60?

[blindsquirrel]

All 4 speed Silverados from '07 to '13 used (or can use, they may have left the factory with something different, but see below) the same TCM service number, and anything from various RWD apps from '06 to whenever they made the last 4 speed vehicle all interchange. There is no early/late difference in the TCM hardware, that only applied to the ECM.

24226863, 24230461, 24234503, 24235340, 24235776, 24239224, 24242391, 24243901, 24251062, 24252114 all interchange. All those different service numbers are just because of a change in suppliers for the C37 capacitor from one supplier to another, or whatever.

T42_guts.jpg

You can change TCM OS even from one platform to another totally different one using HPT and write-entire. It will cost you credits though. I would do the TCM with SPS or if that's not an option, buy one pre-flashed to the VIN you specify.

There are no 2011 6.2/6.0/5.3 + 4-speed files in the repository, you will probably have to use a 4.8L file (or the VIN from a 4.8L file, if able to do the SPS thing).

2011 Silverado 4.8 E38 (4L60E T42 24252956) 1346009422.hpt

[village_idiot]

I just looked at the numbers on each unit, and have

ECM - E38
12639900
Service # 12633238
Current OS# 12639835

TCM - T42
24230461
Service # 242345036163
Current OS# 12590424

[blindsquirrel]

TCM #24234503, you are good to go for any 2006-2014 TCM OS. It's in that big interchange list. ECM #12633228 is (nearly?) universal for any 2010-up E38. I would get both flashed with the VIN from that 4.8L file, then copy back in all the differences from the 6.2L file.