The gear selector switch, I believe, is interchangable. So, what you did by swapping them out should be fine. I have the exact opposite setup. My 4L80E came with the 2 plug module. My 06 truck has the 1 plug module on the 4L60E. I had planned on just swapping them just like you did.
The rear sensor on the 4L80E is the sensor you should plug your existing factory harness plug into. The front sensor is the input shaft speed sensor... thats the one that gets the extra connector/harness you will be adding.
Very nice $40 crossmember mod

Bill

 

New question:

I searched and cant find it. I have an LC-1 WB O2 sensor. Well the O2 sensor was out because we were using the dyno O2 when all hell broke loose. It got soaked in tranny fluid. So it may be shot. I thought I read on her that the sensor itself was a stock VW O2 sesnsor and you could go down to your local VW dealer and pick one up. Anybody know this to be true or know the part number? I will of course clean the current one and see if it works first, just trying to be prepared.
EDIT: Maybe I found it my self. The VW # is 021906262 also a Bosch number 0258007057/058
Bosch Upstream, Advance part number 17014 $52.96
Anybody know how to verify this?

 

 

Sorry to high-jack, but do the 2-piece steel shafts do this often??

 

If balanced properly no...

I think he got deployed! He hasn't posted up here in a little while!

 

wow!!! i would hate to have been the guy driving when that diveshaft broke. i would have been like ..damn!! my bad dude!!..lol

 

yeah i pmed him.... was talking back and forth about it.... then he disappeared

 

He is in Iraq until April 2008 I believe. God Speed!

 

Correct!

Here is a quick rundown on the driveshaft incident.
I had my stock shaft shortened and balanced at the advice of a trans shop
They thought the shaft was pushing into the back of the trans.

Found out this was wrong and that it was most likely the pinion angle that was off. After talking to Chuck at FLT I swapped a stock shaft back in. This was because I only had about 1/3 of the splines in contact with the output shaft. The correct length stock shaft was only balanced to stock specs.

At 140mph the stock shaft gave up and you see what happened.

I swapped to a 4L80E and a 3" OD aluminum shaft. I have yet to get the pinion angle checked. Its on my list when I get back from Mortar-rita-ville.

Here is the list:
1. Install new shifter on GTO (already bought)
2. Install wet kit on GTO (already bought)
3. Adjust 4L80E tune for shift points on Tahoe
4. Get pinion angle checked on Tahoe
5. Scan trans with TranX at trans shop to find out why my 1-2 shift is so harsh.
6. Have sex with wife

Maybe not in that order

 

funny that you didnt put #6 in the #1 spot.... copying, hmmm