Tcc not commanding / no cruise
#1
Tcc not commanding / no cruise
2004 6.0 4l80e we are having problems with the lockup and cruise on the truck. Using the snap on brick we can command lock up and it works fine. These are the values the scanner shows: tcc open/short- yes, all other shorts- no, brake switch is working (can see on scanner), all temps are up, speed sensors are fine and working smooth... ecm will not command lockup.
Anybody have any tips?? Thanks
Anybody have any tips?? Thanks
#6
We verified power and ground to the tcc.. Took it out and made sure the oring was good and the screen wasnt plugged. Everything looks perfect- it also Ohm checks good. We can engage it anytime we want with the scanner and it works great. The problem seems to be on the computer side. I will clear all the codes and go from there. Any more suggestions? Thanks for the help guys