Auto 4X4 disengaging

By GMC6000
May 30, 2006 in 1999-2013 Silverado 1500 & Sierra 1500

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GMC6000

Posted May 30, 2006

My father in law has a 2003 GMC Sierra with the auto 4X4, and lately while driving around it just kicks into neutral. Any ideas on what is wrong? He replaced the switch, but is still doing it.

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