I'm having trouble getting my truck to go into 4H. It goes into 4L no problem but when I try 4H it doesn't go in. No 4x4 light on the dash and I think I hear it engage in but I'm not sure. Anyone have any input? Thanks

 

Just some input,,I know that these transfer cases are well know for the forks going bad,,it's not the main fork,,it's the slip on cover on them,,not sure if any of this helps

 

What's the best way to check if that's the issue?

 

best I can tell you is look into the DIY area,,open up the service maneuel for your truck,,lots of good info there!!!

 

Verify that it is a tcase problem before tearing in to anything. With the truck parked, put the t-case in 4 hi. Crawl under, and try and turn the front drive shaft, should not be able to.

 

Ok il give that a try in the morning. Thanks. If it does turn what would that mean? And the truck should be running right? Thanks

 

Truck doesn't have to be running.

If the shaft turns, that means you have a problem internal to the t-case. If it doesn't, its simply a CAD problem. (vacuum system that locks the front axle.)

 

Ok thanks

 

Ok so I tryed the driveshaft and it only moves a little bit. I also put the front end up in the air and put it in 4h and 4L and when I spin one tire the other does not spin and also the 4x4 light is not coming on at all now

 

Ok so I found my problem. The 2 steel vac lines going to the t case are broken in half. Anyone know where to get new ones and are they an easy change?