Any information on a 1994 transfer case? Pushbutton, auto hub. Periodically while driving on dry pavement I get a massive clunk under the seats. It sounds like something is coming apart. After the clunk everything seems fine. Any ideas? Keep in mind I am in 2wd when this happens. It has happened twice lately, but I only get to drive it on the weekend.

 

Check U-joints, tranny mount, and the slipjoint in the rear driveshaft. Greasing the slipjoint may take care of that if the other parts are in good shape.

 

make sure the auto hubs are disengageing.

Bob