People running 4L80E's please come on in..
11-29-2006, 03:23 PM
#1
People running 4L80E's please come on in.. Few questions:
What wiring harness / PCM are you running?
If it was not a harness for a 4L80E how did you do your connector?
1) Use a cut off 4L80E connector and tap in to the harness / pcm
2) Repin a new connector in to the harness / pcm
3) Other (please explain)
What did you use for programing in regards to comanding the 4L80E perameters?
I think that's all I have for questions right now. Thanks in advance.
What wiring harness / PCM are you running?
If it was not a harness for a 4L80E how did you do your connector?
1) Use a cut off 4L80E connector and tap in to the harness / pcm
2) Repin a new connector in to the harness / pcm
3) Other (please explain)
What did you use for programing in regards to comanding the 4L80E perameters?
I think that's all I have for questions right now. Thanks in advance.
11-29-2006, 04:24 PM
#2
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Hey Boss....
I had a harness made for my application, but they messed up and made the harness for a 60E anyway (but the programming is for the 80, guess 1 out of 2 ain't bad) which means I had to fix it. PCM is from an '02 F-body.
You don't want to cut off the harness connectors.
The 60E and 80E use the same connectors, just use slightly different pin configurations. Also, the 80E has an extra connector (Input Shaft Speed sensor, 2 wires).
The Big Grey connector has a couple of minor differences. 3 wires change between the 60E and 80E. The connector should come apart pretty easily. With the connector off, pry off the inside face (mine was white) and that should allow you to push pins forward and move them around. You'll need a diagram for the pin locations (ATSG manual or GM Service manual has them)
1.) Pin U on the 60E needs to move to location S on the 80E (which is TCC lockup)
2.) The wire previously in location S and the wire in location T are not used. You can use the wires for the above mentioned ISS sensor, but you have to have the connector on the trans end (two pin) and move the pins on the PCM end. Don't recall where the wires move from or to.
The grey connector on the 80E does move rearward, so hopefully your harness will be long enough to reach.
The range selector switch should either plug in directly or you should be able to swap to one that does (my '04 80E had a single plug range selector, swapped to an '03 style which has 2 plugs). The range selectors interchange between the 60E and 80E (if my information is correct).
Everything else (VSS and such) should plug and play.
Can't help you with programming. Wasn't there / didn't do it.
'JustDreamin'
I had a harness made for my application, but they messed up and made the harness for a 60E anyway (but the programming is for the 80, guess 1 out of 2 ain't bad) which means I had to fix it. PCM is from an '02 F-body.
You don't want to cut off the harness connectors.
The 60E and 80E use the same connectors, just use slightly different pin configurations. Also, the 80E has an extra connector (Input Shaft Speed sensor, 2 wires).
The Big Grey connector has a couple of minor differences. 3 wires change between the 60E and 80E. The connector should come apart pretty easily. With the connector off, pry off the inside face (mine was white) and that should allow you to push pins forward and move them around. You'll need a diagram for the pin locations (ATSG manual or GM Service manual has them)
1.) Pin U on the 60E needs to move to location S on the 80E (which is TCC lockup)
2.) The wire previously in location S and the wire in location T are not used. You can use the wires for the above mentioned ISS sensor, but you have to have the connector on the trans end (two pin) and move the pins on the PCM end. Don't recall where the wires move from or to.
The grey connector on the 80E does move rearward, so hopefully your harness will be long enough to reach.
The range selector switch should either plug in directly or you should be able to swap to one that does (my '04 80E had a single plug range selector, swapped to an '03 style which has 2 plugs). The range selectors interchange between the 60E and 80E (if my information is correct).
Everything else (VSS and such) should plug and play.
Can't help you with programming. Wasn't there / didn't do it.
'JustDreamin'
11-29-2006, 10:47 PM
#4
Great summary, covered pretty much everything. If you have a 4L60 harness you can also swap the pins at the pcm rather than the actual connector; just two ways of doing the same thing in the end. My setup is installed right now and I'm learning how to configure the PCM to work with the 80 rather than the 60 it originally was setup for. If you have EFILive or HPTuners you basically just swap in the correct transmission parameters and diagnostic functions and that's about it, at least I hope since I haven't driven my car yet 
but it's getting pretty close. If you don't have one of these programs, any pcm tuner could take care of the swap I'm sure.
but it's getting pretty close. If you don't have one of these programs, any pcm tuner could take care of the swap I'm sure.
11-29-2006, 11:03 PM
#5
Originally Posted by LIL SS
What wiring harness / PCM are you running?
If it was not a harness for a 4L80E how did you do your connector?
1) Use a cut off 4L80E connector and tap in to the harness / pcm
2) Repin a new connector in to the harness / pcm
3) Other (please explain)
What did you use for programing in regards to comanding the 4L80E perameters?
If it was not a harness for a 4L80E how did you do your connector?
1) Use a cut off 4L80E connector and tap in to the harness / pcm
2) Repin a new connector in to the harness / pcm
3) Other (please explain)
What did you use for programing in regards to comanding the 4L80E perameters?
2002 Cadillac Escalade Harness and PCM
Harness reworked by me.
Repinned for the 4L80E at the PCM connector
Using EFILive with the stock file for the 2002 Escalade LQ9 engine with the 4L80E parameters/diagnostics swapped over from a 2002 Chevy Express Van file
11-30-2006, 03:27 AM
#6
Justdreamin,
Thanks for the info. Unfortunately I have an M6 harness but have already bought the connector and pins through speartech. A buddy has a loose connector / half harness for just the tranny piece. I was thinking about using this t extend the wires to the PCM so I would not have to completely pin a connector, just slide those out and back in to the right spot and wire it to the PCM.
Thanks for the info. Unfortunately I have an M6 harness but have already bought the connector and pins through speartech. A buddy has a loose connector / half harness for just the tranny piece. I was thinking about using this t extend the wires to the PCM so I would not have to completely pin a connector, just slide those out and back in to the right spot and wire it to the PCM.
11-30-2006, 07:15 AM
#7
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Well, just make sure that you've got your bases covered.
There are a couple of connectors I'd be concerned about.
1.) Big grey connector. Sounds like you're working that out.
2.) Range selector connector or connectors (depending upon your range selector switch).
3.) ISS sensor (2 wires)
4.) VSS sensor (again, 2 wires).
I'd be concerned that there are enough wires going from the PCM to the trans. I'm not sure how many are in an M6 harness or the auto harness. But I'd guess there's probably 18 or so (maybe more or less) in the 80E bundle (between the 4 connectors named above). Might count wires and see how many you've got.
Do you have the diagrams for the 80E harness? I'm not sure what resources I can provide (can't look right now, they're @ home and I'm @ work), but I might be able to provide pin-outs if needed.
'JustDreamin'
There are a couple of connectors I'd be concerned about.
1.) Big grey connector. Sounds like you're working that out.
2.) Range selector connector or connectors (depending upon your range selector switch).
3.) ISS sensor (2 wires)
4.) VSS sensor (again, 2 wires).
I'd be concerned that there are enough wires going from the PCM to the trans. I'm not sure how many are in an M6 harness or the auto harness. But I'd guess there's probably 18 or so (maybe more or less) in the 80E bundle (between the 4 connectors named above). Might count wires and see how many you've got.
Do you have the diagrams for the 80E harness? I'm not sure what resources I can provide (can't look right now, they're @ home and I'm @ work), but I might be able to provide pin-outs if needed.
'JustDreamin'
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11-30-2006, 10:05 AM
#9
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These are from a 2002 Escalade manual. First 3 are 80E last 3 are 60E. The wire colors didn't match with the single connector and harness segment I had from the 04 4L80E trans. I just used the 2 connector PNP switch from the 4L60E trans. The dealer said this should work. I haven't started the engine yet.
