Trans light flickering

[Detroit9911]

Trans light will flicker while driving. M1123. Then go off for awhile. Then flicker again. Then stay on then go off. Guessing loose connection. Anyone have a picture of the wire and its location? Some said it’s in the battery box?

 

[Mogman]

Trans light will flicker while driving. M1123. Then go off for awhile. Then flicker again. Then stay on then go off. Guessing loose connection. Anyone have a picture of the wire and its location? Some said it’s in the battery box?

It is likely the TCM, but it would not hurt to check all the grounds in the trans. system, I had a TCM that did that and changing it fixed the issue.