Recently took my rig into the local dealership with cold start issues. Long story, but they flashed the ECM, and replaced the injectors. Truck now seems to be running better, but is throwing a "P0602" code. They say that it is an error in the current software for the ECM.

Anyone out there have any knowledge on this?

Thanks
Dan


'03 3500 5.9 6 spd with no modes.

 

One sec

 

Have them reflash the ECM. If the code is still set, only one thing and that's replace the ECM.

 

I think they tried that. Like I say, they say with the current update, this is normal. I am dubious, but trying to get info. Any idea what sort of issues I should be looking for?