Hello. I own a 2015 JK with the automatic transmission. I recently installed 4:56 gears and I currently have the stock 32's on it.
Under 90% or less throttle pressure the transmission shifts perfectly normal. Under wide open throttle the 1-2 shift works perfect.
The 2-3 shift is a different story. Under WOT it won't shift until I let off the gas. I believe 3-4 is the same.
When I installed the 4:56's I used a superchip programmer to tell the computer that I had the new gears. The cruise control, GPS and speedometer are all accurate.
At 90% or less throttle pressure you wouldn't know I had any problems.
Again there is no tune in the vehicle, just the gear swap with the superchip being a different version of the AEV procal.
I'm taking it to the dealership tomorrow and they are going to check it over.
My question is if there are any TSB's or flashes that are out there to give the dealership a heads up. I'm wondering if I have a faulty selenoid.
Any clues would be appreciated and I will post what they do find out.
Thanks in advance.