I recently bought a 2013 Jeep Wrangler Sahara and when you are cruising at a consistent speed for a while and then get on the gas the transmission shifts really hard. This is the only time the jeep shifts like that and it happens at highway and city speeds. It once shifted like this on the highway and the car died. I took it back to the dealership and they replaced the computer, but I am still having the same issue. Has anyone else experienced this or something similar?