Chime Always On

Chime Always On

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Diagnostic System Check - Vehicle

Circuit/System Description

The radio generates the audible warning through the left front speaker. The radio receives audible warning requests via GMLAN serial data from the body control module (BCM).

Circuit/System Testing

1. Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch ON parameter is Inactive.

• If not Inactive, test the headlamps signal circuit for an open or short to voltage. If the circuit tests normal, replace the headlamp switch.

2. Ignition ON, park lamp switch OFF, verify the scan tool Park Lamp Switch parameter is Off.

• If not Off, test the park lamp switch signal circuit for an open or short to voltage. If the circuit tests normal, replace the headlamp switch.

3. Ignition OFF, key out of the ignition, verify the scan tool Ign. Off/Run/Crank parameter is Inactive.

• If not Inactive, test the key in ignition signal circuit for a short to ground. If the circuit tests normal, replace the ignition switch.

4. Ignition ON, doors closed, verify the scan tool Door Ajar Switch parameters show Door Closed.

• If not Door Closed, go to Courtesy Lamps Always On. Courtesy Lamps Always On

5. If all circuits test normal, replace the BCM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

* Ignition and Start Switch Replacement
* Headlamp Switch Replacement
* Refer to Programming and Relearning for BCM replacement, setup, and programming