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Home >> GMC >> 2012 >> Yukon Base, RWD >> Repair and Diagnosis >> Body & Frame >> Fixed And MOVEABLE Windows >> Diagnostic Information and Procedures >> DTC B320A >> Circuit/System Description
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Circuit/System Description

The front door power window motors communicate with the driver door lock/window switch and passenger door lock/window switch via serial data. The motors contain a logic module which must be normalized or programmed any time the window motor is serviced to provide proper operation and communication between door modules and window motors.