Question about 2005 GMC Sierra

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2005 Sierra 4wd is not working properly

I have the push button 4 wheel drive shift on the fly. The lights were all blinking then it would go into 4 low and now it won't do anything at all. I really need my four wheel drive and am on a very limited budget. What can I do to trouble shoot it? If I unplug the battery, what do I need to do to reset the system? A friend purchased a new switch, but after installing it, still nothing happens. Do I need to do a reset now? How? Thanks in advance for your help.

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We ended up taking it to the dealership, it was a sensor.

Posted on Jan 29, 2009

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Have 2005 Isuzu rodeo when I press buttons to go into 4 wheel drive nothing happens also when I turn vehicle on no 4 wheel drive sign comes up on the dash


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Y do u need 2 buttons 2 use 4wd on 05 gmc


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