Whoa- what did you do again..............

 

Ok so about this, did you have to change the vin in your truck or just program the denali os into yours?? I have an 08 yukon i want to do this to, wondering if its as simple as wiring in the tu/td switch to the bcm or if theres more to it and as far as the prndl display is yours showing the 4l60 pattern or the 6l80 display?? Not to mention the programming i can do just need some specifics

 

Definitely subscribed to this thread

 

Would like to see someone do a write up on a 2WD. Have a friend debating a 4L80E or 6L80E swap in a 2013 2WD RCSB. I want to help, but am not really up on the NNBS trucks.

 

I am currently gathering parts for this swap in a 2wd. Should be ready to start the swap before the end of March. I will be taking a lot of picture for posting.

 

Thsi swap should be about as straight forward in an nnbs as a 4l80 into an nbs, biggest difference is the tcm being separate, and needing to swap a denali or newer truck os.... Ive been doing some reasearch on the wiring of the tu/td tow/haul cruise etc.... Maybe conpletely off base but, there are two wires going to the bcm for tu/td in my case an 08 yukon with or without denali has same part number on the bcm, which tells me its mostly in the os and wiring, and as far as the tcm, nnbs are separate on the 4l60 they are just not internal as they are on the 6l80/90...... Looking like a couple wires added to the bcm and a shifter stalk swap would take care of the tu/td as it looks like the serial data picks uo theshifting command... And the tcm would need to swap harness or pull wires for the 60 tcm and wire everything in for the6l80 and ut would possibly function as factory... Not sure about instrument cluster, havent dug that far yet...

 

All you need is our module and to change a few calibrations in the ECM and TCM. As simple as a transmission R&R. And you can go back to a 4L60 at any time just as quickly.

 

How much is the module?? I recently acquired hptuners and have noticed there are already tables in my 08 yukon for a 6 speed trans...

 

I used TrueBlueGTOs module and its super easy. A little expensive but definately worth it, although i would like to figure out the tap up/down feature lol.

 

I have not messed with this at all since my last post, but have put plenty of miles on it. All I can say is that it's worth every penny for this swap. I put a quad in the bed, and towed a rzr on a trailer on a 200 mile trip and it was nice. The real test to me was this past weekend though. I pulled a 5th wheel camper on that same 200mile trip and I weighed 13720lbs total. It pulled it very well. Was in 5th gear most of the time, and hit 4th for some hills(about 3k rpm). But it was sooooo nice not to be revving 3600rpm the whole time.

The TU/TD is at a stand still. It would have been very useful on this last trip so I will be wanting to figure it out soon. From what I'm told from a very good source is that the Truck OS WILL NOT work with the Vette style shifter, so my original plan won't work. It will come down to either putting all the "right" parts in, or making a module to talk on the CAN BUS. I'll try the module first. Lol.

My PRNDL still says PRND321. But if I put it in 3 it will lock it out of 6th(1-5 shifts normal) same thing for 2. But if I put it in 1 it will do 1st and 2nd gear and that's it.

I'm sure one of them will let me use tap shift, but can't try anything yet as I have other projects going on.