95 Truck 4L60E Harness Plug NO U pin????

[49chevy3100]

my 95 4l60e plug only has 12 cables and PCM pin out calling for 13 I’m using the 95 truck PCM I’ll post the picture see if anyone can help me since I tried the tech side found nothing on it and other forums as well first picture is my plug and 2 nd plug is what I’m guessing I should have I guess I can pin it in but was wondering why if originally didn’t have it to begin with.

[rmc115]

I don't know if this helps but i had a 95 4l60 and in research found 95 was a 1 year only trans. up to 94, 95, 96 were all different electrically. a good trans guy knows the differences. Mike