My Nitro has about 15,000. MI. on it. 3.7L, auto trans.. Had the hard shifting right from day one. It's also loud. It's more noticeable when passing on the highway and increasing speed on an entrance ramp to the highway. I figured because it was new, it needed time to break in and settle. At 10,000 MI. it went back to the dealer. It's still the same. It's not enough of a problem that it bothers me so as others, I'll wait for Dodge to issue a PSB (when they figure it out).