Ecshroyer

Im sure theres already a thread out there for this but im not sure where. I have a 01 silverado ecsb with a 2 peice drive shaft that i want to swap trans on. And I want to know what yoke and u joint i need, what plug i need and if i need a specal tourque convertor?

FFDP

iTrader: (2)

You'll need the transmission, new cross member mount or mod the factory one, mod the wire harness to make it work, new drive shaft or shorten a section of yours because the 4L80e is longer, different flex plate and converter.

Then a custom tune to make everything work. I suggest more reading on your part to get the exact parts you will want.

Ecshroyer

Thank you, i have been reading im just not sure what yoke i need and ive read both that u need a tune and that you dont

FFDP

iTrader: (2)

I must have a tune, no other way around it.

The 4L60e calibration in the computer can not run a 4L80e.

1FastBrick

iTrader: (17)

Actually, it can but you need to modify the wiring to do so. This is known as "The Relay Method"

You also need to make some adjustments to the calibration.

FFDP

iTrader: (2)

I've seen people have bad luck without doing the segment swap.

Yes you can do the wiring change pretty easy but the segment swap makes everything a breeze.