LS 3 amd 4L60E controller
 

I know the LS3 has its own ECM but what about the trans controller?

Where does the trans get its info, (TPS-VSS) what controller is available, and is there one better than the other ($$)
How does the cruise control work with this combo?

Re: LS 3 amd 4L60E controller
 

You might be able to use a PCM from something that had a 58X crank triggered motor backed by a 4L60E. Maybe a 2005-2006 GTO?

Another option would be to use a standalone transmission control box. I'm running a MicroSquirt on my 4L60E with a home-brew harness (disclaimer: I also work for a company that sells them).

Re: LS 3 amd 4L60E controller
 

I have a 4L60E in my 53 and a stand alone TCM BUT I have a Throttle Position Sensor on my Holley.
So how does the stand alone ECM connect to stand alone TCM for a TPS

Re: LS 3 amd 4L60E controller
 

Don't know that stand alone systems will communicate with each other unless they were designed to. To get TPS input for both systems this should work.

http://www.tciauto.com/tc/electronic...-y-harnesshtml