Guys, just double checking everything this afternoon in preperation for the hopeful engine fire up on Wednesday (if I get all my goodies). One thing I noticed is that on the drivers side of the trans there is the main harness and three plugs that pigtail off that. I have two of them plugging into the trans module and a 3rd (fat 4 pin connector - not the square O2 sensor plug) that isn't plugged into anything. I don't remember unplugging that and am just trying to figure out what it goes to. Every other plug that I removed I taped and labeled, so that makes me think that this isn't applicable, but I honestly can't remember. Just seeing if anyone knows what that might go to. Maybe I just missed a plug on the passenger side? Doesn't look long enough to get ot the other side, but I was trying to beat the darkness, so may have missed it. Here is a pic. Little background, this truck is a 2wd 2001 with a 4L60E.



Thanks guys,

Andrew

 

I'd have to crawl under my truck and take a look where that one go's. I was wondering where you don't have it marked could it possibly go the transfer case if it were a 4x4?

 

I thought about that, but I don't know if the transfer case woudl be on the right or left side so I'm not sure.

 

Hmm... I have had my tranny out numerous times. I don't remember ever seeing a connector like that. The only plugs in that area are the ones for the neutral safety and the front o2 sensor.

 

that's an o2 sensor.
ky, your's are white and square.

 

Yeah mine are white and square. He mentions accounting for the o2 sensor plug in his original post.

 

I kinda freaked out the first time i saw that too.

 

I'm a dummy, you were right. Post cat O2 sensor. I was thinking precat only. Sorry for the waste of time. I'll wait till daylight and sleep before posting next time.