Shudder when it gets around 65 mph
YES, I have the same problem. After I'd signed on the dotted line I got on the interstate & felt it when I was between 65-70 mph. I took it back to the dealer & was assured it was the ECO system. I thought I could stand it because it would be getting better gas mileage than my '04, but when you're driving 8 hrs. on the interstate it makes you just sick. I would've never bought it if I'd had any idea. And it makes me sooo sad because I LOVED my '04 Liberty; never had a problem.