Here you go. I made them as large as I could so you could read them.

 

Maybe it's just traction control. We do have it on the older trucks in the PCM. I haven't bought credits for this truck yet. I will pretty soon & play with this a little.

thanks for the schem. I am building another engine for this, a few more cubes & good cam to help with towing our boat. I was thinking of a different transfer case with the 4l80 but that looks complicated.

 

I wondered if maybe you did have traction control, but figured you would know if you did.

 

I don't have any TCS buttons in my pickup but I was looking at my Rat Rods tune which is a 2000 1/2 ton PCM and it has TCS settings.

After some reading at the hpt forum, it appears that our trucks have TCS whether they have a button on the dash or not.