Newb with a dream and a twinkle in my eye

[Sandman614]

Got an idea for a project vehicle using a 5.3L with a NV3500. Seems like this is the place for the ECM work that I need to make it work.

[camdog5188]

I posted my introduction asking about a 5.3 manual tune file recently, I have one that should (might) work. the 5.3 manual tune file in the repository is broken don't try to use it. instead, I took the 4.8 manual trans file and copied and pasted the 5.3 fuel and spark tables into it, once i get a chance to try it out if it works i can upload that if your interested.

[Sandman614]

That would be excellent, let me know how it works out! Exactly what I was planning to do as well but the 2003 silverado tune I found was a dead link. I reached out to the original poster, hopefully he can reupload it.What ECU/OS is yours for?