I put new brake pads and rotors on my 98 GC (150,000 mi) and while I had the front end up I found was (I think) too much free play when I rotate the wheels while in the air.
With the front end elevated, if I spin either front wheel, the other wheel turns in the opposite direction, but theres about an inch of free play before the other wheel turns. It has a QuadraTrack trans with no 2WD selection.
Thanks much,
Rufus