[layinrocker65]

Originally Posted by shortboxin

It gets a little better, but it will still stall on occasion. I'm using the 2002 Tahoe harness that I modified per LT1swap.com.

The reason I ask is that I worked on a swap that the person had hooked up the constant power wires for the pcm to the ignition switch. The pcm did not like it and stumbled every start like it had to learn to idle all over again. Fixed the wires so they had constant power and issue went away.