6l90e in a 6l80e car

[b18cls1]

Will a 6l90e work in a car that has a 6l80e in it already with a e38 ECM

[gmh308]

Will a 6l90e work in a car that has a 6l80e in it already with a e38 ECM

Sure.

[b18cls1]

Just bolt it in an flash the 80e os into it?

[gmh308]

Just bolt it in an flash the 80e os into it?

Well apart from the engine/convertor side, not quite a bolt in as the case is a little over an inch longer and depending on which chassis the 6L80E is in, the extension housing/output stage may be different in length too. OS's are generally the same from year to year with exceptions across different platforms. :)

[b18cls1]

It's in a g8. I can have the driveshaft shortened and make a trans crossmember if need , that stuff I'm not worried about the electrical part is what I'm wondering about. Will the harness plug into the 90 ect.

[gmh308]

It's in a g8. I can have the driveshaft shortened and make a trans crossmember if need , that stuff I'm not worried about the electrical part is what I'm wondering about. Will the harness plug into the 90 ect.

Yes it will plug right in. Connector is the same. :)

[b18cls1]

Good cause 12k miles and my 80 is trashedi hope the 90 can take some more abuse

[gmh308]

Good cause 12k miles and my 80 is trashedi hope the 90 can take some more abuse

What is trashed in the 6L80. We hear of mainly failures in the 4-5-6 area. :(

[joecar]

Was the TCM calibration edited...?