I have a 07.5 LMM with about 40K miles on it. I have run a PPE Xcelerator on it since it was practically new. NEVER have I even tried a level above 4! Most of the time I left it on Level 3. When towing, it would turn it back to stock and since the exhaust was replaced, to Level 1. I don't tow that much other than a 13K lb bumper pull camper.....approx a liberal 1000 miles a year.
So here is what the truck is doing and it does it in urban driving conditions as well as on the interstate. During driving when the truck downshifts, the CEL will come on. THe next time you stop, the trans locks in 4th gear. If you let the truck sit long enough, the trans will reset and be able to drive normally until it happens again while the CEL remains on throughout. The downshifts I speak of are not in acceleration, but more of a "coasting" completely off the throttle.....an off-ramp, going round a corner, slowing down to pull in the driveway type situations.
The shop has had this truck since a week before Christmas....about 4 months. I am no expert by any means but they tell me they have replaced and reprogrammed the shift solenoid the code led them to, replaced the TCM, replaced a ball bearing?? in the valve body (sorry I don't' have specifics) and lastly the wiring harness to the said valve body.
Of course I am out some cash this point, have had the truck back 4 times and am nearly ready to put a pistol in my mouth over the whole situation. So I wanted to see what you guys think and obviously I am open to suggestions on what to do.
Sorry for the long post and thank you all for your input.
So here is what the truck is doing and it does it in urban driving conditions as well as on the interstate. During driving when the truck downshifts, the CEL will come on. THe next time you stop, the trans locks in 4th gear. If you let the truck sit long enough, the trans will reset and be able to drive normally until it happens again while the CEL remains on throughout. The downshifts I speak of are not in acceleration, but more of a "coasting" completely off the throttle.....an off-ramp, going round a corner, slowing down to pull in the driveway type situations.
The shop has had this truck since a week before Christmas....about 4 months. I am no expert by any means but they tell me they have replaced and reprogrammed the shift solenoid the code led them to, replaced the TCM, replaced a ball bearing?? in the valve body (sorry I don't' have specifics) and lastly the wiring harness to the said valve body.
Of course I am out some cash this point, have had the truck back 4 times and am nearly ready to put a pistol in my mouth over the whole situation. So I wanted to see what you guys think and obviously I am open to suggestions on what to do.
Sorry for the long post and thank you all for your input.
