I have a 94 4.3 CPI Jimmy that I recently lost my 4WD. I was driving with the 4WD on and forgot it was still engaged when I pulled into a parking space. I turned a little too sharply and I heard a pop noise from the front passenger side wheel well area. Since then, I have no 4x4. The lights still illuminate, both high and low, I believe the TCCM engages (I can hear it).
I haven't really had a chance to give it a good look over (with a 3 month old kid, its hard to find the time) but I wanted to know if anyone has an opinion what might be the cause.

Mike[/align]

 

It sounds like you seperated your CVJoint. The poping was probably it seperating, you will have to replace it to get your 4x4 back

 

if you find that it is not your cv joint check you vacume lines

 

94's have automatic locking hubs?

Could be in there?

 

nope push button (2 button: 4hi and 4lo)

 

Sounds like a cv, but if its not I would suggest the check list on what to check with 4x4. I keep coping and pasting from my other post,


Check to make sure the actuator cable is not frozen,

check to make the actuator is not broken,

check the vacuum is holding from the switch on the transfer case,

make sure all your vac lines are hooked up,

if everything else is fine then your vac switch on the transfer case might of failed. when you do the selector do you hear a click noise from the passenger kick panel?