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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1422 (Body Rear End) >> Diagnostic Information and Procedures >> DTC B3964 and B3965 >> Circuit Description

Circuit Description

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The endgate module controls operation of the endgate window motor by supplying ground for the endgate window regulator down signal and endgate window regulator up signal circuits. These circuits are used to enable the endgate window motor relays. If the endgate module detects a short to ground or voltage on the endgate window regulator down signal or endgate window regulator up signal circuits, a DTC is set.