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Home >> Cadillac >> 2004 >> Escalade EXT >> Repair and Diagnosis >> Body & Frame >> Windows >> Door System, Mirror System & Window System >> Diagnostic Information and Procedures >> DTC B3820: Left Rear Window Down Control Circuit >> Circuit Description
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Circuit Description

The Body Control Module (BCM) grounds the control side of the left rear power window down relay upon receiving a class 2 message from the Driver Door Module (DDM).