I've had a used 2014 Dodge ram sport short box regular cab hemi 4×4 for about two years. Just recently at about 80,000 miles it developed a shudder that starts at 29 mph and decreases at about 55 mph. Would come and go at first, steadily became more frequent, and is now constant. Just cleaned the throttle body and test drove , no change. Really got on it and it looks right up and shifts normally so I don't think it's the tranny. It's not throwing any codes out. Was wondering if anyone else had similar issues.