I just was wanting to know if anyone had done this before.
The transmission harness that runs from the pcm to the top of the 4l60e is very tight in there no room.I need to change out the end of that harness with a replacement plug sold on several sites.I have been under the car and can get my hand to take off the connector but I can not see how the hell you have any room to connect the new plug on the harness.Any tips??

 

Are you saying that you can disconnect the plug, but cannot then pull the harness away from the trans and tunnel?
I don't have a Gen-4 and therefore don't know if there is a clip holding the harness to the tunnel.

 

yes there is not enough wire coming from the harness to pull it down to connect the new trans plug to the harness.

 

bump""

 

Cut a big hole in the trans tunnel! Problem solved.

 

Seems a bit extreme.

Perhaps your harness got pinched between the trans and the tunnel. Either that or there is a factory clip holding it. Unless the harness is mostly routed within the car and drops out above the trans.'

There are dozens of Gen-4 owners here who have removed their trans. Do any of you know the answer here?Thanks. (I know what I don't know.)

 

The problem is that there is not enough of wire harness or enough slack to use when reconnecting the new pigtail.It does not come down enough so I can not work with it.

 

My only experience is on my '81 Camaro with LS2 and 4L60E. Obviously I have an aftermarket harness. My trans sub-harness breaks off from the main harness in the engine compartment and I have a good 3ft of loose sub-harness. When I drop my trans, the connector is dragging on the ground. Here is a picture of how loose my trans harness is:



I am hoping that a Gen-4 person that has removed their own trans can explain where/how the trans sub-harness is routed.
I wish I could help more, but someone else will have to do it.

 

Thanks for the info.I guess I will "like you said wait for a 4th gen to answer.Thanks for the input though!!

 

Ours was/is super loose... probably a good 4-6 inches of extra harness (98 car). Trace the harness back to the engine bay and find out where yours is clipped or hung up

 

I think you will find that the tranny plug is on a sub-harness as the other guy mentioned. There are two other plugs on the same harness, a VSS plug that plugs in on the rear tailshaft on the passenger side and also I believe a portion that runs over the top of the trans and feeds the rear oxygen sensor that is downstream in the y-pipe. I think you will need to unplug the other connectors in order to pull the sub-harness down to obtain the slack that you need.

I just pulled my 4L60E in my 98 SS yesterday and that's what I saw. Hope this helps you some. I can try to get a picture later today if that's not too late for you.

Good luck.
Floyd

 

can anybody tell me what that valve at the back of the case right behind the low/reverse apply is?

 

You have now hijacked two threads; please don't.
As a member you are welcome to start your own threads.
Click on "Automatic Transmission" and then "New Thread".

 

sorry i could't figure out how to start one until you mentioned how. it will not happen again.

 

Thanks for the input it is much apperciated!! I will take a look!

 

Thanks you for chiming in I knew someone had to pull the 4l60e out at some time! I have bought a new sub harness which I got from one of my vendors and it will have the plug and color coded wires all the way to the pcm with the connector ends to plug into the pcm.Nice and clean all the way thru. This will kill the electrical gremlin for good!!