6l90e conversion

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12-26-2019
Arj1320

6l90e conversion

My question is there a segment swap to install a 6l90e into a 06 2500hd? Has anyone done this already? If so what did you have to go through to do the install?
12-26-2019
5FDP

Not possible with a stock computer or anything segment swap related.

The P59 never used a TCM and the 6L90e has the TCM that works over canbus with the E38+ style controllers.

You would need to source a complete standalone controller and harness for the 6 speed transmission. I think someone makes it but I forget off hand.
12-28-2019
kevin87turbot

PCS makes a standalone controller for the 6L80/90 applications.
09-09-2024
S10PARTS4U

Yes but they dont back it up with much help. True Blue motorsports and zero gravity service the customer service end of it. Bought one brain and harness for a low mileage goodwrench trans i picked out of a wreck. Anyway if anyone knows anything about cruise control. Po741 code ( among a dozen others) all now shut off- in HP tuners but cruise Still wont work ... No one will help figure what next move is. Nevermind the trans module glitches, won't read trans temp, shifts hard, or late, or locks in 4th. I know of no success stories in 6l80 6l90 swaps. If i had to do it again, and i might....Put in a 4l80 paired with an np246 and call it good.
09-10-2024
Fast4.7

Quote:

Originally Posted by 5FDP

Not possible with a stock computer or anything segment swap related.

The P59 never used a TCM and the 6L90e has the TCM that works over canbus with the E38+ style controllers.

You would need to source a complete standalone controller and harness for the 6 speed transmission. I think someone makes it but I forget off hand.

P59 used a TCM but only with the Allison. I doubt the Allison coding will communicate with the T43. I have actually considered doing some compatibility testing myself. I doubt that it has any compatibility myself but worth checking. Even the 0411 communicated with a TCM with an Allison. I believe the 05-09 P59s actually even used J1939 CAN to control the newer 6spd Allison TCM.
10-09-2024
blindsquirrel

Quote:

Originally Posted by KennediVon

Installing a 6L90E transmission into a 2006 Chevy 2500HD requires a few key considerations. First, the 6L90E is about 1.5 inches longer than the 6L80E, which may require adjusting your driveshaft to fit properly. Additionally, the transmission control module (TCM) must be compatible with your existing engine control module (ECM), and you may need to reprogram it for optimal performance. Wiring modifications are also necessary, as the harness may need to be adjusted to accommodate the new transmission connectors. It is important to make sure the input shaft is compatible with your current setup, especially if you plan to keep your existing transfer case.

Thanks ChatGPT. That was great. FYI, you forgot to put in the spam link to the phone clicker game you're supposed to be promoting.
10-09-2024
gtstorey

Quote:

Originally Posted by blindsquirrel

Thanks ChatGPT. That was great. FYI, you forgot to put in the spam link to the phone clicker game you're supposed to be promoting.

It is one of the better AI post though.
10-09-2024
blindsquirrel

The problem with this mode of thinking where you take all the possible answers, find the average, and that must be the correct answer, is little minor details like there is no 6 speed TCM that's compatible with a Gen 3 PCM. How, exactly, do you 'reprogram it for optimal performance'? HOW? Program it with what? How do you adjust the harness to get a CAN-based TCM to communicate with a Class2-based PCM? It's completely useless at anything other than superficially looking like an answer to people who don't know any better, who seem to be the target demographic for this dumb bullshit.
10-10-2024
gametech

Quote:

Originally Posted by blindsquirrel

The problem with this mode of thinking where you take all the possible answers, find the average, and that must be the correct answer, is little minor details like there is no 6 speed TCM that's compatible with a Gen 3 PCM. How, exactly, do you 'reprogram it for optimal performance'? HOW? Program it with what? How do you adjust the harness to get a CAN-based TCM to communicate with a Class2-based PCM? It's completely useless at anything other than superficially looking like an answer to people who don't know any better, who seem to be the target demographic for this dumb bullshit.

So you are saying that AI has learned to perfectly replicate politicians?
10-10-2024
gtstorey

Quote:

Originally Posted by gametech

So you are saying that AI has learned to perfectly replicate politicians?

At least some (most?) politicians.
10-10-2024
blindsquirrel

Considering there's probably some folks here who proudly sport "Tim McVeigh Did Nothing Wrong" tattoos, probably best to not get into all that. I prefer not to know how disconnected from reality the people around me are.
10-10-2024
Fast4.7

Quote:

Originally Posted by blindsquirrel

The problem with this mode of thinking where you take all the possible answers, find the average, and that must be the correct answer, is little minor details like there is no 6 speed TCM that's compatible with a Gen 3 PCM. How, exactly, do you 'reprogram it for optimal performance'? HOW? Program it with what? How do you adjust the harness to get a CAN-based TCM to communicate with a Class2-based PCM? It's completely useless at anything other than superficially looking like an answer to people who don't know any better, who seem to be the target demographic for this dumb bullshit.

The Zero Gravity TCM-2650 only needs a TPS and RPM signal from the engine that is connected to the 6L80E/6L90E.

https://www.zerogravityperformance.c...e-6l90e-6l50e/