Re: Shuddering when turning
I had some really nasty crow hop in my 06 Ltd 5.7 when I bought it. Upon further inspection, it was evident the diffs and t-case had never been touched (39k miles). The stealership pulled the 'adding more additive' number on me and it didn't fix a thing. I drained both diffs and refilled with the Redline 75W140 with the friction modifier already in it, then did a drain-and-fill with the Mopar fluid in the t-case. Thing rode like it was on glass rails even with the steering all the way to the stop.
In stark contrast, a buddy of mine had nearly identical symptoms, so he did the same thing I did. Didn't help at all. He took it to a local shop where they hooked it up to some fancy computer doo-hicky and told him the left front speed sensor wasn't functioning properly. He replaced the speed sensor and all was well.
I'm a fairly new Jeep owner. These animals seem to be quite fussy sometimes when diagnosing a problem.