I have a 98 grand Cherokee and it has high which is all time and a low and then neutral but I've tried just putting it in neutral and it won't go so I'm assuming I have to drive in 4 wheel all the time?

 

So, it's a Full-Time All Wheel Drive vehicle then.

The shifter doesn't differentiate between Two Wheel Drive, Part Time Four Wheel or Full Time Four Wheel Drive does it?

 

The '98 had the Quadra-Trac system which had all time 4wd and 4 lo.

 

Yeah. There's no 2wd It's just all time high or low. It sucks too cause if I'm makin a Sharp turn it wants to kind of spin out or something.

 

You have two choices in the '98, full time 4wd or 4lo. They don't have 2wd at all.

 

you have to drive in 4 wheel drive all time... Have fun replacing your viscous couplers!!! The most common thing to fail with the quadra trac system...

NP231 T-case bolts into your ZJ just need to mess with the linkage. And then you can have what the beast XJ has.