How did you determine this? Are you having a problem? Are there any unusual noises? Not much information so I'll have to guess.
If you have the vehicle jacked up so both front tires are off the ground, it's normal for only one wheel to spin. Hit the brakes, then block the spinning wheel, release the brakes and the other wheel will spin. That's normal and proper.
There was a common problem in older vans where the large pin in the differential would walk out and catch on the back of the transmission case and break it. You'd have transmission fluid all over and the van would not move.
A broken cv joint will prevent the van from moving but there would be all kinds of racket. This isn't common. Based on the lack of other symptoms, I would guess you just have the tires off the ground. If there's other important information, holler back.
Saturday, March 28th, 2009 AT 1:55 AM