[pelletman]

I had it scanned at a transmission shop with a snap on scanner. Is that good enough? It is a 246 transfer case made by New Venture Gear. 5.3 litre 2002 V8. The lights are on to indicate whether it is in 4 wd or not, but they seem to be working correctly. Originally I had a 4WD Service light coming up, but we turned it off with the scanner. The code was a general 4WD fault, it was very vauge. There are no codes now, or at least no lights on.

On front axle turn drive shaft and block one wheel. If locked in the other wheel will spin as you turn drive shaft.

I don't understand what you are saying here. If I block the wheel are you saying that I shouldn't be able to turn the other? Please be more specific.

I have it jacked up and on 4 jackstands. When I put it in 4WD the front driveshaft turns and the wheels turn, but I can stop both the front wheels from turning when it is in gear and running.

Thanks!

Dave