My 2007 Navigator, 104,000 miles, will buck mildly in 1st gear while moving slowly. It's not a slip, but more like a manual would do when letting out on the clutch.
I have also noticed a slight clunk sound when down shifting 4-3, 3-2 range. Nothing major but still noticeable. I have had the TCM reflashed with no results.
Any thoughts?
Thanks!