GenIV Swap Electronics ????

[gmech68]

This is my first LS swap and what would you know I am getting a run for my money already. I had been wanting to swap a 6.0 into my 99 k2500 5.7 obs for some time now. I called my local truck savage and they said they had a 09 ly6. I am thinking great. Not long after I find out that the ly6 electronics are different that earlier ls systems.
I have been trying for figure out how to make it work, and this I where I am at so far. Please correct me if I am wrong. *Using the ly6 pcm (e38) I will need a tcm (e72) to control my 4l80e. But the e38 will not work with my factory gauges.
*If I use Lingenfelters 58x 24x conversion module I can use an earlier ls ecm like a 0411, but would need to get a dbc throttle body and delete vvt.

[chvy=power]

im almost finished putting a ly6 into my 95 c2500... the vvt is pretty useless as far as making more power. GM uses it to help with fuel economy....On the LY6 i put in my 08 sierra i deleted the vvt in it. Also deleted the vvt on the Ly6 for my 95 c2500. Just did a cam swap this past weekend on my dads 2012 2500HD with the Ly6 and also deleted his vvt. Thing flat hauls A$$!!!! Runs so much better than it did with the vvt IMO.

For my 95 im running a 0411 PCM, Lingenfelter box, edlebrock DBC TB, and a holley 20-147 throttle cable bracket

[gmech68]

Thanks for the reply chvy=power. I am assuming that its not exactly cheap to delete vvt? Is the problem with using the factory ly6 setup, the e38 pcm won't operate the gauges. I have been searching high and low and have little to help me understand.

[chvy=power]

its actually not very expensive at all. Type "vvt delete" in google and you will see that summit racing sells a vvt delete kit for $123 and some change....and yea im not too familiar with the E38 pcm. I always use an 0411 pcm, and it has worked great

[gmech68]

I guess I was thinking that I had to change the cam also.

[chvy=power]

Summit has a vvt delete for both a single bolt and a 3 bolt cam

[gmech68]

After countless searches for a LY6 pinout I finally went to the dealer and they printed out one for me. I had looked at Lt1swap.com but it said it was not for ly6. From what I can tell it's the same except the high and low cooling fan relay. Now I just need to find what wires I need to keep on my 99 harness. I am thinking probably get rid of everything that I am using on the new harness.