My 02gc binds when turning, but I'm guessing since the computer controls every aspect (maybe too much so), might not be the same on the Trailhawk. Just an uneducated guess.The new Trailhawk comes with a locking rear differential. Since both rear wheels can be locked to turn at the same rotation, can one turn the vehicle or must you go straight when locked?
True up until the end, when unlocked it is a open differential. I would definitely not be engaging it on dry pavement, that's how stuff breaks.If it is a true locking diff then you will get some tire scrub/binding while turning on pavement. You don't want to have it engaged on pavement. Off-road the surface is normally slippery enough that you will not have any problems with the locker engaged.
On the TH you can only engage the locker in low range. You can not do it in high range. So in normal driving the rear locker is not engaged and I believe it acts like a limited slip.