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Y do u need 2 buttons 2 use 4wd on 05 gmc - 2005 GMC Sierra

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George Dubbs

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I have a 2003 GMC it has two buttons to use 4 wheel drive as most all do with push button controls...One is for standard highway driving with 4 wheel drive the other is for 4 wheel drive a low speeds for off road driving and conditions that need low speed less spin driving..not designed for highway use..and must be stopped to engage where 4 speed highway can be shifted on the go..hope this answers your question..good luck..

Posted on Mar 04, 2015

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