Auto 4x4 works half the time poping sound

[etnies86]

Hey guys I was out in some snow yesterday and to be honest I thought I just had a vac line leak cause my hubs seem tight no play up and down but heres my story.. Yesterday got stuck in 4 inches of snow (lol) so I threw the 4x4 switch on and backed up a few feet it kicked on! I thought right on maybe it wasnt broken so continued on my way few mins later I heard a pop noise and it cut out.. turned it off then back on backed up again it poped back in with in a min it poped back out again by this time I said the hell with it and got out and manually locked them (they were stiff) after turning them back and fourth from auto to lock 10 times they got smoother so ill probably just grease them up anyhow the auto switch does NOT engage the 4x4 system at all anymore period. Now the first time it poped out I had the one side on a bit of an angel Just curious if anyone has an idea as to what it excactly is.. I know my 6L there was max air loss and the hubs and I just locked them in manually all the time didnt bother replacing the hubs but as for this truck it was working and would pop out..

[Burner5509]

First off your post is all over the place, man. Use a little bit of grammar because it is confusing trying to figure out your exact problem.

So you are saying that your hubs will go into auto lock and then come undone, correct? I have had mine for a few months but from my understanding they operate by a vacuum. It sounds like they are not fully locking since there is a lack of grease within the hubs. I'm guessing here, but I'm thinking they are partially locked. When you hit the skinny peddle they are unlocking due to the force the shafts are creating on the spindles thus creating the sound you here.

Take them apart and grease the snot out of them. Once a month manually lock them and drive a short distance, and also do the auto lock and drive around.