Traction control applies the brakes to the spinning wheel which in turn allows the differential to move the power to the other wheel. Pretty basic stuff.

 

A open diff is still a open diff. LS wouldn't be a option if traction control was all it took. I've been stuck on wet grass several times. All the applying brakes etc. trying to get the left wheel to grab etc. maybe mediocre to say the least. LS or posi works.

 

I've got plenty of experience with lockers and LSD's - the traction control in these trucks is plenty for any on road usage. Don't know about wet grass, but it works well in ice and snow

 

Like oldjeep, I've got dozens of years experience with lockers and LSDs as well as welding diffs solid (pure off-road vehicles).

I agree that the stock traction control and even a plain open diff - IF you know how to apply brake & accelerator in unison in poor traction situations is plenty for on pavement use.

Unless they are a LOT better than 2nd/3rd & early 4th (AAM) LSD units, the stock LSDs in these trucks are terrible AND a diff issue waiting to happen. I'd agree with the Auburn unit install if you really need an LSD. I've heard for years how a clutch type will wear out and yes this is true to a degree, but I think the quality of the unit has to be considered. The Auburn in my old 2nd Gen worked as well when I sold the truck with 68k on the unit as it did the day I had it installed.

Lockers are great for off-road use, BUT I've yet to see an "automatic" one that didn't ratchet at least some on turns in dry conditions. A selectable is truly the best of all worlds but NOT CHEAP and I'm not aware of one for a 1500 Ram rear axle...