Okay, bought a 6.4l 2008 Job 1 with an Edge tuner plugged in to the OBDII port with the economy tune on it.
Took it to a dealer for an A/C issue and got it back with a check engine light on and the tuner unplugged. I went to plug in the tuner and it wouldn't let me change the programming.
Then I decided (after the fact, like an idiot) to return it to stock. This took about 5 seconds, tops and then it ran like a dog. Then I attempted to set the tuning back to economy and the Edge tuner told me it needed updating.
I plugged it into my computer and updated it and then set the tuning back to economy. Still running like a dog.
Now, I take my truck to the dealer again, as they have the parts for my A/C in and *before* I give the truck to the dealer, I return it to stock this time. Dealer calls me on Monday and says, the truck is flat DEAD. Zero charge in either battery and the meter doesn't even bounce -- at all.
So I say, great, put in new batteries. Dealer calls me after another half-hour and says, "We can't get your PCM to do anything. It's like it doesn't exist. We need your second key to reflash it." I don't have a second key, so they attempt to make one and the PCM is "unresponsive"?!
Now, my formerly running truck is completely dead, sitting in the dealer's bay and they claim I need a new PCM.
I am so angry at this point, I'm ready to have the truck towed out of the dealer's bay and back to my house. I think they are bending me over and I was just wondering if anyone has any real life experience that would substantiate or refute the following:
1) Dead batteries killed my PCM?
2) Edge programmer killed my PCM?
3) Maybe my PCM is still alive and this dealer is a pack of morons?
And finally, can I buy a PCM and install it myself? I see it's accessible and not a total PITA to get to, I'm just worried about the programming. My understanding with these trucks is they require some pretty specific tuning. Any aftermarket resellers that will hook me up with a new PCM already programmed for DPF/EGR delete? Or even just stock?