front wheel drive system explanation please

JDGreen

New Member
New member, thanks for allowing me to join. I've had a 2011 4x4 with electric shift for a few years. Would someone please explain why the front drive shaft always turns. I think the hubs lock and unlock with vacuum and there is a solenoid on the transfer case. If this is the case why does the drive shave always turn and I assume the differential too. Thanks Ralph
 
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