can't get elec. to my front dif on my gmc 4by4?

me5041

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I don 't have four wheel drive working.Transfer case engages but no elect to front differential.No indicator lights or any thing.fuse is good
 
if you have no power to the front diff actuator then your 4x4 selector needs to be looked at. you didn't tell us the year so I have no idea if it is push button, mechanical, magical or ???
 
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