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2005 sierra service 4x4 light is on - 2005 GMC Sierra

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Posted on Jan 02, 2017

SOURCE: 2005 Sierra 4x4 doesn't work, 4h light is on and stays on

My 2005 Sierra 4x4 did the same thing while running down the interstate on vacation. Scared me to death, thought it was going to shift into 4 wheel drive @ 80 MPR. Had to take to shop and they found a censor bad and they replaced it. Don't know cost, because truck was still under warranty.

Posted on Dec 15, 2012

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