1999 2500 cummins with edge attitude,5" exhaust,bd trans and billet torque convertor

One day just went into limp mode after being parked at the mall for 10 min. Operation had been normal for the 40000k on trans until then, was recently serviced a month prior. Have looked all over the net and tried several suggestions replaced the governor solenoid and pressure sensor and tps or apps and did not correct limp mode condition.
does have code for TPS low voltage input but checks out at 5V.

Anybody have any ideas

 

have u tried adjusting the apps sensor? r u sure its in a limp mode? what is it nessasarily doing. have you made sure the connector to the tranny is plugged in for sure? have you tried to disconnect the edge from the truck and see what it does?

good luck and hope ya figure it out

 

I am assuming it is limp mode as when you put into drive it goes into third gear and wont shift, but is possible to down shift manually, and no overdrive or tc lockup. I have tried to adjust the apps and then replaced it with no success, checked the plugs all seem good check pcm input voltage and was good. seems like there is a million different things that it could be. I havent unhooked the Edge but will give it a try.