GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 DTC B3823

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category

DTC Descriptor

DTC B3823 00: Right Rear Window Down Control Circuit

Circuit/System Description

The body control module (BCM) energizes the control side of the right rear power window down relay upon receiving a GMLAN message from the driver door switch (DDS).

Conditions for Running the DTC
    • Battery voltage is between 9-16 volts.
    • The ignition switch is in the ON position.
    • The BCM has attempted to energize the right rear power window down relay control circuit.

Conditions for Setting the DTC

The right rear window down circuit is shorted to ground.

Action Taken When the DTC Sets

The BCM will not attempt right rear window down operation.

Conditions for Clearing the DTC
    • When the output request is not active the DTC will be a history status code.
    • The history code will clear after 50 fault free ignition cycles or by using the scan tool clear DTCs feature.

Reference Information

Schematic Reference

Moveable Window Schematics

Connector End View Reference

    •  Vehicle Access Connector End Views
    •  Data Communication Connector End Views

Description and Operation

Power Windows Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

    •  Scan Tool Data List
    •  Scan Tool Output Controls

Circuit/System Testing
  1. Disconnect the right rear window switch connector and connect a test lamp from the down signal circuit to ground.
  2. Ignition ON, verify that the test lamp illuminates when the right rear down switch on the DDS is activated.
    3. ⇒If the test lamp does not illuminate test the right rear window down signal circuit for a short to ground. If the circuit tests normal replace the BCM.
  3. If the circuits test normal replace the right rear window switch.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Rear Side Door Window Switch Replacement
    •  Control Module References for BCM replacement, programming, and setup.