Join Date: Feb 2008
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I am sure the techs at the dealership have tried everything they can and in no way would want to try and second guess what has been done or what they are doing as no one knows what they have tried. With that said, I had a similar problem on my tranny(4r100). Yours is a 5r110 so it is different. Checked all the wiring and connections,Took the valve body out, checked it, changed the range sensor still wouldn't work. Couple of days of searching later, I found out that the PCM from my truck had been taken out to try in another truck. Removed my PCM and found one of the pins on the PCM where the wiring harness plugs into the pcm was bent over. Fixed it and my problem was gone. Repeating again, I will not try and second guess them and I am in no way suggesting that this is your problem. I wrote all of this to tell you that I do feel your pain however in not having your truck. It sucks being without your truck. They are evidently scratching their heads on this one. They'll get it fixed.
BTW, Welcome to the ORG. Here's a bump back to the top for someone who might have some help for you.
01 LWB CC SRW 4x4 7.3 auto
Stage II's,HPX, In tank and pre-pump mods,regulated return
AFE stage II,Garrett BB Turbo,4" turbo back, ITP overboost annihilator, 10 pos. DP Tuner,
Motor and tranny rebuilt. forged rods,Mahle pistons, all balanced, new valves,Comp 910's,C/M P-rods,ARP Studs , homemade AIH delete kit, twin TRU-Cool tranny coolers,Ride-Rite air bags B-D X-Monitor
Don't worry about the Mule, just load the wagon.