6L90e T43 TCM - Which PCM ?

[lxcoupe]

Hey guys, I have a 2018 Express Van 6L90e. Having a harness built and I don't have a PCM yet. I'd rather not remove the TCM from the trans if I can avoid it, so any guidance as to which OS I can load onto a blank E38 PCM? Is it possible to find a L99 Camaro/ 6L80e tune in the repository and just write entire once I get the harness hooked up to the trans? This is my first 6-speed Gen IV swap so I'm a bit lost.

[dich_rixon]

In for answers. I think ive decided on a 6l90e. Not a lot of sources for info out there yet.

[tww$]

MIGHT should called psi harness first .They could have built harness and flash a computer and sent it all to you

[Montecarlodrag]

You need a compatible OS in the E38 to properly talk to the TCM, normally from the same year. Very few vehicles use a E38 after 2013. 2015 Camaros still use an E38 it may work however all 2018 vehicles I have seen with a 6L80/90 are GDI and use the E92 ECU, difficult to know without trying.
AFAIK wiring is the same, if it doesn't work you will need to change the TCM, not very difficult.