Add me to the harsh shifting problem
Bought my 2015 Summit with the V6 the day after Thanksgiving and it now has 3500 miles on it. At about 2500 miles it started to have harsh shifts from 1st to 2nd and from 2nd to 3rd, and downshifting harshness from 3rd to 2nd and from 2nd to 1st. Once it warms up by driving a few miles it gets somewhat better. It's so bad that my wife refuses to drive the Jeep anymore. She wants me to get rid of it and buy something else. It's a shame I'm having these problems since this is my 3rd Jeep and my previous ones had zero issues. I called the dealer to make an appointment and I'm taking in next week. I was surprised when the service writer claims to have no knowledge of this happening before with anyone else. Surprised because it is a well known issue and they are the largest Jeep dealer in the Chicagoland area. BTW, I talked to a woman at Jeep Customer Care and she claims that there is no fix for this issue. She also stated that a re-flash works sometime but not always. Amazing (and not in a good way). I'll keep you all posted.