PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

program for ecm E40 to run 4l80e trans help

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Old Nov 16, 2008 | 12:08 AM
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Default program for ecm E40 to run 4l80e trans help

Hi guys my problem is , i have a gto , which had the 6lt ls2 engine the ecm =E40 ecm . the trans comp = t42 tcm which runs the 4l65e transmission.We have installed the 4l80e trans and now we need the operating system to run this trans . is there any trucks that have the ls2 comp running with the 4l80e your help is essential
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Old Nov 16, 2008 | 11:33 AM
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What software are you using for tuning? If EFILive, you need to find a tune with the same os number from some place like holdencrazy.com and just do a trans segment swap with a tune that has a 4l80. If you have HPTunners, you have to email them your tune for them to do the segment swap for you.
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Old Nov 16, 2008 | 03:20 PM
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There are no TCM segments on E40 pcm's, they use a separate TCM.
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Old Nov 16, 2008 | 03:55 PM
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Originally Posted by foff667
There are no TCM segments on E40 pcm's, they use a separate TCM.
Forgot about that
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Old Nov 17, 2008 | 02:32 AM
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I have researched and have decided to use an external tcm . which would be the best for my system , i read about PCS and tci and compushift . Which one would best suite my application Please help , any costings also thanks.
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Old Nov 17, 2008 | 06:26 PM
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there are t42 ecms controlling a 4l80e trans. I would just use the stock one if you are using an e40 ecm.
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Old Feb 10, 2009 | 06:45 PM
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Which vehicles have T42 and 4L80E? I would like to know so I can investigate this further. Thanks.
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Old Feb 11, 2009 | 07:16 AM
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2007+ 2500 HD pickups should have 4l80's and T42's

Ryan
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Old Feb 19, 2009 | 05:38 PM
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Thanks slow. Unfortunately, all I have found for 2007+ are 6L90E and Allison transmissions.
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Old Feb 20, 2009 | 03:58 PM
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Yay! Found one from an '07 Yukon. Thanks for the info guys!
-------------------------------
1 24235341 Operating system
2 24233118 System
3 24238958 Transmission
4 24233116 Transmission diagnostic
-------------------------------
Selected Options:
VIN: 1GKGK26K47R153097
Controller: TCM Transmission Control Module
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Old Jan 19, 2012 | 07:11 PM
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Originally Posted by hawkls7
Hi guys my problem is , i have a gto , which had the 6lt ls2 engine the ecm =E40 ecm . the trans comp = t42 tcm which runs the 4l65e transmission.We have installed the 4l80e trans and now we need the operating system to run this trans . is there any trucks that have the ls2 comp running with the 4l80e your help is essential
Did you ever get this working how did you do it?
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Old Jan 19, 2012 | 07:24 PM
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Originally Posted by 94camaroz28lt1
Did you ever get this working how did you do it?
PM Alvin@Tick on here. He has a conversion harness to run a 4L80 with a T42 TCM.
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Old Jan 19, 2012 | 07:29 PM
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Originally Posted by edcmat-l1
PM Alvin@Tick on here. He has a conversion harness to run a 4L80 with a T42 TCM.
What about tuning? Or do you just need the harness adapter? Is there anything special about the adapter? Couldn't I just wire the pin-outs from the TCM to the 4L80E plug?
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Old Jan 19, 2012 | 07:42 PM
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Originally Posted by 94camaroz28lt1
What about tuning? Or do you just need the harness adapter? Is there anything special about the adapter? Couldn't I just wire the pin-outs from the TCM to the 4L80E plug?
No if it was that simple, that's what everyone would do.

Yes there is some tuning involved.
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