2004 GMC Sierra 4 wheel drive

2004 GMC SIERRA
119,000 MILES • V8 • 4WD • AUTOMATIC
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FREDDYGIRL
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The service 4 wheel drive message came on. The 4 wheel drive was working, now it is not. The lights don't come on when you push the buttons. Where is the switch/ module located in the dash. Do you think that could be the problem? It is possible ther may be some moisture in it.
Jan 30, 2010 at 1:16 PM
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