GM Service Manual Online
For 1990-2009 cars only

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 B3697 00: Sunroof Actuator Malfunction

DTC B3697 39: Sunroof Actuator Internal Malfunction

DTC B3697 42: Sunroof Actuator Calibration Not Programmed

DTC B3697 4B: Sunroof Actuator Calibration Not Learned

Circuit/System Description

The sunroof glass is controlled by its own integrated motor/controller containing the necessary electronics, motor, hall effect position sensors, as well as the interface to the driver control switches. The motor/controller is capable of controlling motion based on control switch activation and LIN-Bus message commands from the body control module (BCM).

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

B3697 00

The sunroof module has detected and reported via the LIN-Bus that the sunroof actuator has a malfunction.

B3697 39

The sunroof module has detected and reported via the LIN-Bus that the sunroof actuator has a internal malfunction.

B3697 42

The sunroof module has detected and reported via the LIN-Bus that the sunroof actuator is not programmed.

B3697 4B

The sunroof module has detected and reported via the LIN-Bus that the sunroof actuator calibration is not learned.

Action Taken When the DTC Sets

DTC B3697 is stored in the BCM memory.

Conditions for Clearing the DTC

The BCM no longer detects a malfunction in the sunroof actuator.

Reference Information

Schematic Reference

Sunroof Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Sunroof Description and Operation

Electrical Information Reference

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

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Verify that DTC B3697 42 or DTC B3697 4B is not set.
  2. If the DTC is set, program or calibrate the K61 Sunroof Control Module. If the DTC resets, replace the K61 Sunroof Control Module.
  3. Replace the K61 Sunroof Control Module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Sunroof Module Assembly Replacement
    •  Control Module References for sunroof motor/actuator replacement, setup, and programming.