Where are you located? Maybe there is a member or shop close to you that could help you diagnose it
Help!! Tcm p0708
- Thread starter Forrest_ray
- Start date
I had this exact problem with an A50 controller. It was the tcm. To diagnose i switched out the tcm with the one off my other truck and the problem jumped trucks. Dealer Flashed a new tcm and i was good to go
i sure appreciate all the info y'all are giving. it really means a lot. I'm located in Prattville,AL and if theres a shop within a couple of hours ill sure take it by there. i thought it was the tcm but i got another tcm and put on it and it didn't fix it, it actually threw more codes out. it was a used tcm and the dealership said that its communicating with them but now its throwing more codes. i put the truck back to stock on my efi and the problem is still there. something i forgot to mention is that when i put on the straight pipe exhaust and the efi live and drove it, everything was fine like normal and the next day i was gonna go through my tunes and see how they worked, all the way to level 6 and got on it pretty hard. well i went on home and the next day i drove it maybe 30 miles and when i crunk it up to leave thats when the codes came. its a 2011 dually with 4" lift and 6 35's with 5" flo pro exhaust and efi live, thats all thats on it. no lift pumps, intakes, injectors or anything like that. i wonder if the level 6 was to much for it??
Well it has a new tcm and still no fix. It use to say "shift inhibited" and wuldnt go into any gear then after i got it back from the dealer it didnt do that anymore. It still gets stuck in gear when the codes pop up. I have been running it in the stock setting and all i wuld have to do was clear the codes when they came on and it wuld shift fine. When i first put ithe efi in the truck everything was fine until i put it in level 4 then everything went down hill. I put it in level 4 the other day just to see what wuld happen and when i started driving it made it to 4th gear and wuldnt shift up or down. I had to put it back in stock and clear the codes. Then the "shift inhibated" came back on and now its acting up again. I ran the truck in level 3 when i put efi on it and never had a single problem. I even put it in level 6 (only for 10 minutes or so) and no problems but when i put it in level 4 and drove maybe 20 miles these problems came up. A few times it has thrown over 40 codes at once. All tcm codes.
Help
Please let me know what happened to your truck mine is doing the same exact thing and I have no idea whats going on
Please let me know what happened to your truck mine is doing the same exact thing and I have no idea whats going on