another l92 harness question??

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Aug 9, 2015 | 02:05 PM

916montels

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another l92 harness question??

i have a 07 l92 motor and 6l80 trans 4x4 harness came out of a Escalade. ecm e38. im swaping into another gbody. im in need a harness for the l92 with a 4l80 trans. my question is can i make my harness from the escalade work with a 4l80 trans or do i need to get from a different car.

Aug 9, 2015 | 02:22 PM

alocker

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Quote:

Originally Posted by 916montels

The 6ll80 has the tcm in the trans. The 4l80 harness is specific since the t42 tcm required is separate. You will need a 4l80 harness for it to work.

Aug 9, 2015 | 02:32 PM

916montels

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is there a all in one harness that i can get ?

Aug 9, 2015 | 02:35 PM

916montels

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http://secure.ultracart.com/catalog/.../HAR-1040.html . or is this gonna be my best bet.

Aug 10, 2015 | 09:55 PM

ctd450

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The vans had 4L80 behind LY6 so that harness will have a T42 TCM connector and 4L80 connector on it.

Aug 10, 2015 | 11:14 PM

916montels

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do you happen to know what year van?

Aug 11, 2015 | 06:23 AM

alocker

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Quote:

Originally Posted by 916montels

do you happen to know what year van?

07-08 had the 4L80 in 2wd 6.0 vans. I have one but it's a mess. It can be reworked but some of the stuff runs through the BCM or a separate harness making the rework a little more involved than older harnesses. They also started changing over pedals as I found out. Mid year and fleet changes might make adapting your pedal a little more complicated also. The only reason I know is because I just went through it.

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Jan 1, 2016 | 08:13 PM

alocker

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Quote:

Originally Posted by 916montels

i was wondering has anyone deleted the vvt by just get a different harness made, also deleting from the ecu??

Deleting VVT is easy. You dont even need a new harness. Just a new cam, cam gear, and front cover. The tune might need a new OS loaded without VVT but is very doable. The E38 had both VVT and non VVT so its capable of both.

Jan 1, 2016 | 08:15 PM

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916montels

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so just not having the plug in my new harness is not going to cut it?

Jan 1, 2016 | 08:18 PM

#11

916montels

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The reason i ask is because i had a harness madeand they tuned my ecu and was told that i didnt need it. and im just dont want to get it started on ruin the engine..

Jan 1, 2016 | 08:20 PM

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alocker

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Quote:

Originally Posted by 916montels

so just not having the plug in my new harness is not going to cut it?

Why would you want delete the VVT if you are keeping everything stock? It's 2 extra wires and a plug in the harness and there is an advantage to running it. The only reason to delete it is to run an aftermarket cam or there is a tuning conflict.

Jan 1, 2016 | 08:24 PM

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alocker

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Quote:

Originally Posted by 916montels

The reason i ask is because i had a harness madeand they tuned my ecu and was told that i didnt need it. and im just dont want to get it started on ruin the engine..

Who made the harness and tuned it?

Jan 1, 2016 | 08:28 PM

#14

916montels

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im not sure why it was deleted.. i was told that i didnt need it

Jan 1, 2016 | 08:36 PM

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alocker

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Quote:

Originally Posted by 916montels

im not sure why it was deleted.. i was told that i didnt need it

Sorry to hear that. There is just no reason to delete it in your application. VVT has been proven to increase performance under the curve. You already had the hardware and ecm it's as easy as connecting 2 wires to the phaser like stock. Making it run in a retro fit should not affect the VVT whatsoever.

Jan 1, 2016 | 08:43 PM

#16

916montels

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I see..

Jan 1, 2016 | 08:47 PM

#17

alocker

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Quote:

Originally Posted by 916montels

I see..

Here is what I am not sure of but there is some info on the net. If you leave the hardware in but don't control it, it will leave the cam in the fully advanced position. This will give good low end but will go soft up top.