check the locking hubs by rotating the brake or rotor slightly and turning the hub selector into the lock position.A click should be hear when the hub engages and the axle should now turn with the hub.
Next ,with the still running ,turn the selector to the free position.
if it does not work as it should, the hub assembly needs repair.

Answered by mathiaso
5 questions asked

I believe my hubs are automatic. I don't see a way to lock them on the wheels. I had an explorer in the past that had manual hub locks on the wheels but I don't see those on my chevy.

Response from owlsrkool3d
1 question asked

sorry for not been carefull to your input.
Look into the connection between
The electric shift motor and the transfer case .
or the problem is in the transfer case.
Had the system been scaned?

Answered by mathiaso
5 questions asked

Hi i would look to the vacuum actuator between the transfer case and the front axle. the older modle are underneith the battery. that could be cause the front axle not to engage.

Answered by funck_master
1 question asked

actually the switch on the front diff on that year is electronic, if the switch is working and you can hear the transfercase go into gear , it will most likely be the front differential locking switch , 12 bucks and easy to do

Answered by CHEVYII
5 questions asked