Engine and Transmission Tech

tips, technology, tools and techniques related to vehicle driveline components

Go to Thread: PreviousNext
Go to: Forum ListMessage ListNew TopicLog In


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5342 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
GM TCM for 8-speed
Posted by: BlownMGB-V8
Date: July 11, 2017 04:59PM

I've found this:
[www.amazon.com]

which is a separate transmission controller for the TL-80SN 8 speed used in 2014 and 2015 Cadillac CTS-V models. The TL-80SN is the same as the Aisin AA80E except for some internal changes like different heat treat on some parts and extra clutch plates in some clutch packs. No doubt the bellhousing pattern is different as well, I do not know what they did with the electrical connectors.

However, for this TCM to work with the GM engine controllers it has to have a CAN bus communication protocol that matches. I believe that is very likely to be the same as the one used in the MegaSquirt controller also, as it was developed primarily by GM enthusiasts. Maybe lady luck is looking my way this time, hope springs eternal as they say.

Looks like this is my next approach. Perhaps I can find a CTS in a junkyard and harvest the controller and harness. If not, the TCM can be had for around $250 as a new GM part.

Jim


donkelly23
Don Kelly
Charleston, SC
(89 posts)

Registered:
07/21/2011 05:13PM

Main British Car:
1980 TR7 V8 Z28 FI ECM 4.0

Re: GM TCM for 8-speed
Posted by: donkelly23
Date: July 12, 2017 01:22PM

8 Speed, OOOOOHHHHH


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5342 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: GM TCM for 8-speed
Posted by: BlownMGB-V8
Date: July 12, 2017 06:51PM

Yes, all I need is a controller. The rest is done.

Jim


Sorry, only registered users may post in this forum.