I am having the exact same problem. I have used the tuner in the past and it has worked flawlessly. Now it just freezes at the "Turn Key Off" prompt after writing to the TCM. Any ideas? I thought maybe it needed an update so I downloaded the latest CROM, but that wasn't it. Help please!

It thinks you turned off the ESP. Thats when those light come on, when ESP is disactivated. Do you actually have that size tire, all around?

I checked and ESP is not deactivated in the Predator. Yes, all four tires are 285/70R17's. I changed the tire size in the Predator to 265/65R17 which was ...

I just did the 87 perf flash on the U7137, latest revision. The only thing I adjusted was the tire size to 285/70R17. After about 100 yards of driving I have all the ESP, ABS, Anti-skid, and parking brake lights on. I stopped, shut the Durango off, restarted and they went out. Drove about 100 yards ...

Cool, all worked out ok. Took a long time, but it worked. Kind of a pain trying to find a serial cable in today's world, but all is good. I am using the 87oct performance , what does the trans perf do? The only thing custom I did was change the tire size. Thanks all!!

So I just install this and all is good? Sounds simple enough. I guess I will give it a try and see what happens. If you smell smoke...grab a bucket!

I just got my new Predator last night and I tried to use it, after hooking it up and trying to install the tune I got an error message saying something about cannot load tune, insert DSDL CD ROM. I am assuming this is not a good thing. Any help is appreciated.

2006 Dodge Durango 5.7L Hemi