Hey , so today my 2012 was having issues with the coolant coming out of the overflow. Changed out the radiator cap and it seems to have fixed that problem . The truck when I bought it came with a edge cts tuner and was tuned on the race setting . I was wanting to get rid of this tuner to get a real one so I put the setting back to stock . Now I'm getting a pcm error with the code p0605 . Do I need a new pcm or should I try having it reflashed ? Anyone else have this problem ?