i live in MA and friday we going to get up to 2ft of snow and i really need my 4x4. everytime i press auto 4x4, 4x4hi and 4x4lo the light blinks but yes the t-case does engage but my front diff does not move but the t-case does move.... ? if the t-case is engage and i just remove the part on the diff and just stick something in there just to engage the fron diff????? 02 avalanche 5.3 1500 north face please please help thanks..... oh and yes the switch i did remove it and looked at it opened it up looks new all the pins are good and tested wires look good also from the switch..

 

i was reading and found that it might be my encoder motor sensor????