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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 96 (Fixed & MOVEABLE Window Systems) >> Description and Operation >> Power Windows Description and Operation >> Driver Power Window Operation

Driver Power Window Operation

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The switch for the driver power window has 3 positions UP, Down and Express Down and its position is a direct input into the driver door switch (DDS). Upon receiving a request for power window operation (switch activation), the DDS supplies voltage to the power window motor left front up or down circuit and grounds the opposite and the power window motor runs to move the window up or down.