Some of you guys (not all, but some) needa bit ofeducation.
This is a great link to help clear up some of the differences between limited slip, lockers(auto and selectable) and an open diff.
Enjoy.
http://www.4crawler.com/4x4/TrueTrac.shtml#TrueTrac

2nd gen Dodges do not come with "lockers".
Locking differential does not = limited slip
There are four or five units available for the rear 9.25" diff in the third gen 1500. None for the front.
Zero electronics involved (no electric locker available for the 9.25)
Posi traction is GM'sname for"limited slip".

 

I know I call the auburn a posi quite often but that is because it's much easier to type that than limited slip differential and if I put LSD everyone would always ask "what does LSD mean?"

 

Where can I find a good Install shop near S.E. WI ? Thanks

 

I lived in Kenosha for a few years and while i was there i used a great shop in Zion (just across the border in IL). Northwest Auto
847-872-2211
I'm not sure if the do gear work. They are a good bunch of guys and can direct you to a shop that does.

 

dswan,
The "4 HI" versus "4 HI LOCK" refers to the transfer case locking the front and rear driveshafts.
It does not refer to the axel differentials.

 

. Both of my 3rd gens have them my 2004 ram 2500 and my 2003 ram 1500 both spin all 4 regardless of if a tire is off the ground or not. You just have to know what package your truck has. Both my trucks are worlds different but they both have the offroad and tow packages which gives the 1500 the 545rfe trans which is the better of the trannys for the gas engines and it has the 9.25' rear diff which gives me a locking ability. The regular packages all had basic 8inch rear diffs and were either open or clutch driven rear ends. But thats why you'll see chevy diesel guys putting the 3rd gen 2500 gear set in ther pumpkins because of the locker. But I wouldn't bother putting anything for off-roading or really spending any money at all on a 2wd truck. Not saying to not upgrade it but I wouldn't bother for off-road. You'd be way further ahead of the game by buying a 4x4 truck to begin with. P.S. I have ran the local Chrysler shop for about 15yrs now thats why I know this. You can literally Google ( ram vid decode) and it should bring up the official Chrysler vin decode website and therr you can type your VIN and see every single detail about your vehicle and what packages and size rear ends and etc. It even tells you if you have limited slip or open or etc.