4wd slamming into gear

[SWFLHOMES]

When I put the truck in neutral and engage the center lock the truck moves very slow (almost as if it's slipping) then it slams into gear. It does the same thing in full lock. This is at 5MPH. Could it be the electronic differential or a transmission issue? What should I check?

[SWFLHOMES]

Anybody? It's a similar Thud to the newer "transmission thud" post. I called the dealer and they said try changing the transfer case fluid, "if it's dirty the clutches may not engage correctly". Could it be that or the electronic tranfer case?

[wvicary]

Wish I could be of help but I've not come across anything like this yet. The only thing I could suggest is having the system checked for codes. Is there any change if the vehicle is hot or cold?

[SWFLHOMES]

I'll have to see whether or not it does it cold. It feels like the front axles or transaxle gets ahead or behind with slow forward motion. The Thud or clunking feels like timing is off in the drive train. My cardan shaft is new and there is never an issue at higher speeds. It is most noticable at a drive up window or at the school drop off line when you are going 5mph in slow traffic starting and stopping. I will have to take a trip to the dealer but they are 1 and 1 1/2 hours away so it's a 1/2 a day out of my schedule. Thanks!