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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 191 (Fixed & MOVEABLE Window Systems) >> Diagnostic Information & Procedures >> DTC B3819, B3820, B3822, or B3823 >> Circuit/System Verification

Circuit/System Verification

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Ignition ON, command the appropriate rear door window UP and DOWN by using the window switch on the driver master control. The rear door window should perform UP and DOWN function.