like the sub says, 4 hi or 4 low flat ground,or off road, wont stay in 4wd......

it will stay in for alittle bit, then without warning will just pop out......

any ideas?

the first owner said he never used 4wd, so i cant see it being warn out.....


its a 1999 automatic.....

thanks

-Lance

is it stock any lift or body lift???

its 2" body  and 3" susp, but it was doing this in its stock form when i bought it.......


that was my first thought too

but that would just be to easy LOL

mine was poping out the other night but i didnt have the hubs all the way in 4x4 dont know what that matterd but it did    sorry im not sure but ill try to ask around

its strange, its not like the shifter is loose/sloppy, it feels normal when you take the t-case in and out yourself, witch would sugest that the interlock pin (detent spring) whatever you want to call it, is in place......

 

Now I'm having this issue too!

Of coarse we getting 16" of snow tonight and who would need 4x4 in that.

It will only partial engage in high 4 and can't even budge it to slide into low 4!

I have to really push hard to keep it engaged, the neighbour said all four tires were spinning in the snow but as soon as I put any kind of excelerator down it pops out with a quick grinding clunk!

I've never seen this before!

Any suggestions?

is your 4x4 indicator light staying on when it pops out?  mine flickers but haven't noticed any issue with the 4x4, may be completely unrelated.

The indicator stays on for the most part. It doesn't sound like its the axle disconnect system but definetly the t-case.
Could a vacuum leak cause this?

If the Transfer shifter is popping out, it's either worn parts, broken or weak locating spring or a disengaged circlip in the TC.

Here's what I came across, water in the t-case!!

Took it inside a shop, dropped the fluid and found ice crystals, flushed and refilled and also blew out all the vacuum lines. Work properly now!
Received a tip from a heep guy on this.
Hope this may help someone else.