Any particular years of 4L80E required to work with T42 TCM?
07-30-2013, 09:10 PM
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Any particular years of 4L80E required to work with T42 TCM? Hello,
I am going to use a PSI conversion harness for an LY6 and a 4L80E being run by a T42 TCM.
Is there any certain year of 4L80E required to run this combination?
Any certain system or weird items required?
I have a good 4L80E out of a 2001 2500 Chevy already, so I hope this will work.
Thanks!!
I am going to use a PSI conversion harness for an LY6 and a 4L80E being run by a T42 TCM.
Is there any certain year of 4L80E required to run this combination?
Any certain system or weird items required?
I have a good 4L80E out of a 2001 2500 Chevy already, so I hope this will work.
Thanks!!
08-05-2014, 08:43 PM
#7
My buddy owns a trans shop but he isn't in to swaps and **** he has a good case from a 99 5.7 chevy van he is going to build it for me for 1000$ it's got a 7 bolt pattern my engine is on the stand but it looks like it will work I'm just worried about using psi harness with t42 I want to make sure I have the correct electronics inside this is my first ls build I've been out of the game for a whilE last motor was a sb 400 ported 202s
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08-28-2014, 07:08 PM
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question what combo ecm and Tcm is every one using for the 4L80E tranny
I have a ls3 iam building I been looking at alot of the vendors websites who sell ecm and tcm kits but they want about 1600. Do I really need to spend that type of cash why is the cost so high when I see ecm for about 200-250 and TCM for about 300-500 anybody knows what works please post part numbers. I know I can least drop the cost down at least 900-1000 bucks depends if I go with used or new
I have a ls3 iam building I been looking at alot of the vendors websites who sell ecm and tcm kits but they want about 1600. Do I really need to spend that type of cash why is the cost so high when I see ecm for about 200-250 and TCM for about 300-500 anybody knows what works please post part numbers. I know I can least drop the cost down at least 900-1000 bucks depends if I go with used or new
Last edited by solo20; 08-28-2014 at 11:45 PM.
08-30-2014, 11:29 AM
#9
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I am now looking into swapping my LS2 for an LS3 and am just learning about PCMs.
All LS3 come standard with a 58x reluctor and as far as I know all GM 58x PCMs use a separate TCM and only support drive-by-wire which requires an electronic throttle.
You might find a suitable PCM/TCM at a junk yard from a recent wreck like a 2010 Camaro.
Personally I likely will retrofit the LS3 with a 24x reluctor (as was done on my LS2) and use older PCMs that support a 4L60E or 4L80E.
Another option is the Holley Dominator ($2000+) which supports 24x and 58x for both drive-by-cable or drive-by-wire and supports the 4L60E/4L80E. (Note the cheaper Holley HP does not support a trans.)
So you cheapest solution is probably to retrofit a 24x reluctor, which is a good time to install ARP rod bolts and a few other upgrades.
All LS3 come standard with a 58x reluctor and as far as I know all GM 58x PCMs use a separate TCM and only support drive-by-wire which requires an electronic throttle.
You might find a suitable PCM/TCM at a junk yard from a recent wreck like a 2010 Camaro.
Personally I likely will retrofit the LS3 with a 24x reluctor (as was done on my LS2) and use older PCMs that support a 4L60E or 4L80E.
Another option is the Holley Dominator ($2000+) which supports 24x and 58x for both drive-by-cable or drive-by-wire and supports the 4L60E/4L80E. (Note the cheaper Holley HP does not support a trans.)
So you cheapest solution is probably to retrofit a 24x reluctor, which is a good time to install ARP rod bolts and a few other upgrades.
08-30-2014, 04:15 PM
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I am now looking into swapping my LS2 for an LS3 and am just learning about PCMs.
All LS3 come standard with a 58x reluctor and as far as I know all GM 58x PCMs use a separate TCM and only support drive-by-wire which requires an electronic throttle.
You might find a suitable PCM/TCM at a junk yard from a recent wreck like a 2010 Camaro.
Personally I likely will retrofit the LS3 with a 24x reluctor (as was done on my LS2) and use older PCMs that support a 4L60E or 4L80E.
Another option is the Holley Dominator ($2000+) which supports 24x and 58x for both drive-by-cable or drive-by-wire and supports the 4L60E/4L80E. (Note the cheaper Holley HP does not support a trans.)
So you cheapest solution is probably to retrofit a 24x reluctor, which is a good time to install ARP rod bolts and a few other upgrades.
All LS3 come standard with a 58x reluctor and as far as I know all GM 58x PCMs use a separate TCM and only support drive-by-wire which requires an electronic throttle.
You might find a suitable PCM/TCM at a junk yard from a recent wreck like a 2010 Camaro.
Personally I likely will retrofit the LS3 with a 24x reluctor (as was done on my LS2) and use older PCMs that support a 4L60E or 4L80E.
Another option is the Holley Dominator ($2000+) which supports 24x and 58x for both drive-by-cable or drive-by-wire and supports the 4L60E/4L80E. (Note the cheaper Holley HP does not support a trans.)
So you cheapest solution is probably to retrofit a 24x reluctor, which is a good time to install ARP rod bolts and a few other upgrades.
here is what a user posted for an ls1
Part number and price - Prices pulled from SummitRacing on 4-3-2014:
Dominator ECU - Part # 200R574A - $1,781.95
LS1 Main Harness - Part # 558-102 - $334.95
Main Power Harness - Part # 558-308 - $54.95
4L60/80 Trans Harness - Part # 558-405 - $155.95
LS Injector Harness - Part # 558-201 - $89.95
Wide Band O2 Sensor - Part # 554-101 - $91.95
100PSI Pressure Transducer - Part # 554-102 - $111.95
that is about 2600 plus
here is a low cost over the counter setup
so far for a 4L65E setup for a ls3 58x reluctor setup
thanks to texas speedway for the help
ECM to use
HERE IT IS THE MOST IMPORANT PART THE DAM PART NUMBER ----> ACDELCO ECM 12636659
ACDelco 24252114 Transmission Control Module can anybody confirm that will work for a 4L65E and can that TCM be reprogram
these ecm and tcm are from a trailblazer 2006
and so far I can not confirm what works with a 4L80E everybody just talks about what works but you never see anyone post part numbers. looking for a lost cost setup with new parts
Last edited by solo20; 08-31-2014 at 11:40 AM.
08-30-2014, 05:16 PM
#11
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First, thanks for the detailed parts list for the Dominator as I am still considering that.
The PCM and TCM are available on Amazon for about $300 together.
A Trailblazer SS came with a 4L70E trans and this TCM therefore controls any 4L60E/4L65E/4L70E with Input Speed Sensor (ISS); I suspect you can disable the ISS and then use any 300mm 4L60E.
There are various threads here that detail how to connect a 4L80E to a PCM that supports a 4L60E.
One of the GM Connect and Cruise packages comes with a 4L80E, but it uses a different (and very expensive) TCM.
The PCM and TCM are available on Amazon for about $300 together.
A Trailblazer SS came with a 4L70E trans and this TCM therefore controls any 4L60E/4L65E/4L70E with Input Speed Sensor (ISS); I suspect you can disable the ISS and then use any 300mm 4L60E.
There are various threads here that detail how to connect a 4L80E to a PCM that supports a 4L60E.
One of the GM Connect and Cruise packages comes with a 4L80E, but it uses a different (and very expensive) TCM.
09-02-2014, 09:13 PM
#12
U need an e38 ECM and a t42 tcm talk to psi they can give u a base tune for each
This is where I am getting my harness for ly6/ 4l80 e they have tcm for 75$
Just call the tech line they are really good at getting back to u I called on a sat afternoon they called me back in 30 min
This is where I am getting my harness for ly6/ 4l80 e they have tcm for 75$
Just call the tech line they are really good at getting back to u I called on a sat afternoon they called me back in 30 min
09-02-2014, 10:12 PM
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U need an e38 ECM and a t42 tcm talk to psi they can give u a base tune for each
This is where I am getting my harness for ly6/ 4l80 e they have tcm for 75$
Just call the tech line they are really good at getting back to u I called on a sat afternoon they called me back in 30 min
This is where I am getting my harness for ly6/ 4l80 e they have tcm for 75$
Just call the tech line they are really good at getting back to u I called on a sat afternoon they called me back in 30 min
