[K10-Kansas]

Thanks a ton. I really appreciate the great info.

So I can easily test the TCC functioning by noting the tachometer display showing a drop of a few hundred RPMs while getting up to speed on the highway.

I can also see the TCC functioning by tapping the brake lightly which would show an increase of a few hundred RPMs on the highway?

Also, maybe with a wire tester I would see the TCC A pin 12v turn off when stepping on the brake pedal while parked?

Before doing this, I looked up a picture of a relay diagram for TCC, a vacuum diagram for TCC, and the brake switch and tried to blend them into 1 diagram. This is what I came up with. I haven't tested it yet to see if anything functions correctly.