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Hello all, 2005 2500HD LT 4x4 CrewCab, Longbed LLY
Been troubleshooting for a few weeks now.
Grounds are good all the way to the front axel actuator.
engine off - Key On, I push 4Hi and I hear the Xfer case engage but nothing up front.
When I test the plug I only get a ground verification no 12v.
With the button engaged trying to switch to 4Hi, I again have no 12v but now a second pin indicates ground (plus the original ground).
So the switch is changing "something" but I still have NO 12v
All fuses are good (the two I know of)

Where does the 12vDC come from that powers the front axel actuator?
Thanks
Burt
 
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