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T56 to 4L80 Pinouts in 99+ PCM

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Old 02-26-2016, 10:05 AM
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Default T56 to 4L80 Pinouts in 99+ PCM

I am looking to sell my 4L80 Harness but want to verify that I have the wires in the proper locations and mostly, verify they have the proper pins labeled. Most of them are still labeled from when I got the harness from Speartech, but some of the labels have torn off. I have also had a couple of the wires out of the harness. Would like to verify this is 100% accurate before selling to avoid any potential issues.

Photo of my harness that I am selling which originally came from Speartech:

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4L80 Connector Wire Color ECU Pin
A Lt Green
B Yellow/Black
C Red/Black
D Lt Blue/White
E Pink 12V Ignition
L Yellow/Black
M Grey
N Pink
P Red
R Dark Blue
S White
T Tan/Black
U Brown
VSS

ISS



Any help is much appreciated.



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