Swapped a 6.0 into a truck, have everything wired up. Set the trans to Manual, PRNDL set to none, disabled what I thought were all relevant trans codes. Scanner shows cruise on, set and resume activate when I hit the buttons. Have a relay that is putting a normal closed 12v to pin 33 (Purple Wire) and normally open 12v to light blue wire on the TAC module. Cruise Lockout always says yes. I checked and there is 4.5 volts floating on the light blue wire from the TAC module even with wire from the brake switch relay unhooked. Can anyone help me out here? I'm kind of at a loss. What is the pid to see if the PCM is getting a good brake signal?