Convert a '99 6.5 from 4L80e to NV4500

[juddspaintballs]

I've read plenty of threads where people are doing these conversions in older trucks (diesels and gassers alike). I've learned that I need a NV4500 with a solid mass flywheel. The flywheel and clutch should be brand new (as well as a few other parts associated with them).

The biggest hurdle I'm seeing is making it compatible with the computer. I know my ECM will need flashed to do this conversion. Where can I get it flashed for a manual transmission if I actually do this conversion? And, will my stock ECM work fine for a while (just with a light on) or do I have to get the ECM flashed before I can even drive it around?

 

[deejaaa]

i am interested in this as well.

 

[tanman_2006]

Hmmm, i'd say you would have to get a reflash before driving but I'm no expert. Walking J can set you up with a KOJO tune.

 

[kojo]

Propably your ecm works fine but will throw codes.
Reflash isn't problem.

 

[SnowDrift]

I'll be doing this swap with my '95. I opted to buy a like donor truck - it's the same chassis, wheel base, year, etc. but has a manual, instead of my automatic. After looking at the options for quite some time, this was my best conclusion to create the least amound of headache.

 

[99tahoe2Door]

From what I have been told you can drive the truck but many codes will pop. I have all of the parts and am hoping to start the swap into my 99 tahoe 2 door soon.

 

[juddspaintballs]

Let us know how it goes. I just got my 4L80 rebuilt because I didn't have the time to do the swap right now, especially without a garage. I do want to do the conversion in the future on another Suburban but with a 6BT Cummins in front of it