Joined
·
23,754 Posts
I think a dealer reset to factory defaults would slow down that process. You'd be starting from square one! The TEHCM already has some of the adaptive info from before the change. :shrug:
6T75 Gen 2 in older Acadia?
21 - 29 of 29 Posts
Joined
·
832 Posts
Square one with a new trans is where I want to be. It learned to perform longer shifts for the wearing components. The components are no longer worn. The service manual for the type of service I did calls for a reset to be performed anyway. I've had to have this to done to past GM vehicles after I did trans work (01 Saturn SL1 that needed a new valve body to cure the well known reverse slam. The new valve body made other shifts harsh. I found a shop to push the button for free. The result was instant smooth shifting).
Joined
·
23,754 Posts
That sounds reasonable. :thumb: After I thought about it, the old light bulb lit.
I realized the adaptive process is an ongoing thing. The computers (TCM and PCM at least) have to know they're dealing with new parts again.
Joined
·
832 Posts
Follow-up: Resetting the adaptives did the trick to smooth it out. The dealer charged $80 to do it though.
Joined
·
832 Posts
Quick gotcha/follow-up: Don't use Felpro exhaust gaskets for the cat-to-flex pipe connection. Use OEM.
A month or so after this work, p0420 popped up. I did the usual "Let's diagnose this." I found that there was a pretty substantial exhaust leak at that connection. I went to the dealer and got new OEM gaskets (re-did the other bank as well). The OEM gaskets are very different in terms of material and thickness. I put it back together and it's been well for over a month. Just wanted to throw this info out there.
A month or so after this work, p0420 popped up. I did the usual "Let's diagnose this." I found that there was a pretty substantial exhaust leak at that connection. I went to the dealer and got new OEM gaskets (re-did the other bank as well). The OEM gaskets are very different in terms of material and thickness. I put it back together and it's been well for over a month. Just wanted to throw this info out there.
gen 2 - 6T75 in a 2008 Acadia?
First off, you guys are awesome! It is actually inspiring, and thank you for documenting this and taking the time to post it.
Another thread (referenced early in this thread) says that with the original TEHCM (Valve body & TCM) a 2011/12 - 6T75 could be put into the 2007-09 Acadia.
Now you've gone a done the same thing with 2nd gen 6T75 (from 2015 Buick Enclave) to your 2012 Acadia.
---
I have a 2008 Acadia, so in theory and with your proven logic, should be able to put in say the same transmission you did? As long as I am using my original TEHCM. RIGHT?
First off, you guys are awesome! It is actually inspiring, and thank you for documenting this and taking the time to post it.
Another thread (referenced early in this thread) says that with the original TEHCM (Valve body & TCM) a 2011/12 - 6T75 could be put into the 2007-09 Acadia.
Now you've gone a done the same thing with 2nd gen 6T75 (from 2015 Buick Enclave) to your 2012 Acadia.
---
I have a 2008 Acadia, so in theory and with your proven logic, should be able to put in say the same transmission you did? As long as I am using my original TEHCM. RIGHT?
Joined
·
23,754 Posts
Correct. Use either your original TEHCM, or a new one of the same generation as long as it's programmed for YOUR car. Programming of major command modules is not 'generic' - the programs are matched with the VIN.
Joined
·
832 Posts
Update: still happily rolling here roughly 45k mi later.
Joined
·
832 Posts
175k mi and shifts are getting lazy (R to D), but the trans is great, She needs the sonnax kit likely. I'm saying goodbye.
21 - 29 of 29 Posts
