That's good to know. I didn't see that feed. I did tap the feed that fed the brake lamp circuit.
Thanks again.

James

I did consider doing just that, leave a 12V direct input, but considering the pin is labeled brake switch signal, I figured the 12V signal it monitored needed to know when the brake pedal was...

Got to tip my hat and say THANK YOU!! :jfj:

Got it all working as designed. TCC locking up correctly, and all other modules receiving VSS inputs.
I piggy backed the VSS at the Trans Tail shaft,...

Thank you for the added info.
It's a 93 K1500 and yes it's an LT1 transplant. 16168625 is the old PCM, and 16188051 is the LT1 PCM, using 1994 LT1 bins because my 1993 4L60E is NOT a pulse width...

Thank you for the diagram's. This will help me identify the circuits I need to deal with!

I hope I don't let the smoke out of one of these modules.

Thank you,

James

That's good to know.
Thank you!

Now have some circuit checking to do...

Thanks again,

James

Thank you Fast355,

I will research this out...sounds good as I see on my 8625 pin A-10 wt wire a signal either to or from the cruise control.
Don't see a similar pin in the 8051 pin outs....

Been searching for a while here with no luck... All is working really well and runs great, save for NO TCC lock up.

My 1993 K1500/4L60E now has a basically stock LT1 motor now ( 383 with a 4x4...