83 shevy silveraldo won't lock into 4x

[lud]

Heres the problem. I have a 83 chevy, When i bought it the 4 wheel drive worked. Well being in Denver Colorado I went to get the truck out after all the snow that we keep getting and went to put in it in 4 wheel the light comes on the front drive shaft is moving but the front wheels aren't. It has an automatic 4 wheel drive. Shift on the fly. I looked under the truck and it looks like it shifts alright. Was wondering if you guys could help me out. My wife is getting tired of me driving her toyota 4 runner. Any body know anything about this.

[us111]

HELLO,,,wish i could help,,,there is a 4x4 forum here,,,ask those guy's,,,they know there stuff.....

[Russell]

Go and get yourself some manual hubs, those automatic hubs are notorious for failure...

[rcbildr]

Definitely get some manual hubs, and be sure to check the torque on the spindle nuts. I found both sides were loose when I installed the manual hubs on my burb.