Chimes and turn signal reminder in 2008 g-5

Audible Warnings Description and Operation .

The audible warnings alert the driver of a system concern or a critical vehicle condition. The radio generates the audible warnings through the speaker. The radio receives audible warning requests via the serial data circuit. If the radio receives multiple audible warning requests, the warning with the highest priority sounds first. The following lists the audible warning priority and the pulse rate:
• Fast rate chime (200 pulses per minute)
• Medium rate chime (150 pulses per minute)
• Slow rate chime (50 pulses per minute)
• Single chime


Do you know what serial data circuit is? It's not a fuse problem an you wouldn't check for codes in the PCM - PCM is the engine computer, you would need a professional or factory scan tool to check BCM - body control module DTC'S - diagnostic trouble codes if anything .

Turn Signal On Warning
The radio activates the turn signal on audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The turn signal on warning sounds when the following occurs:
• The ignition is ON.
• The BCM detects that the turn signal is active for greater than 1.2 km (0.75 mi). The BCM calculates the distance based on a serial data message from the PCM/ECM indicating the vehicle speed.

Fasten Safety Belt Warning
The radio activates the fasten safety belt audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The fasten safety belt warning sounds and the fasten safety belt indicator illuminates when the following occurs:
• The ignition switch transitions to ON.
• The BCM detects that the driver seat belt is not buckled. The radio receives a serial data message from the BCM indicating the driver seat belt status.
If the seat belt is buckled when the ignition is turned on, the chime does not sound. If the seat belt is buckled while the chime is sounding, the chime stops. If the seat belt is unbuckled after the initial transition to ON, the chime does not sound.
Key-In-Ignition Warning
The radio activates the key-in-ignition audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The key-in-ignition warning sounds when the following occurs:
• The ignition switch is OFF.
• The BCM determines that the driver door is open.
• The BCM determines that the ignition switch is closed.
Lights On Warning
The radio activates the lights on warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The lights on warning sounds when the following occurs:
• The ignition is OFF.
• The BCM determines that the driver door is open.
• The BCM determines that the headlamp switch is in the PARK or HEAD position.
Park Brake Warning
The radio activates the park brake audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The park brake warning sounds and the brake indicator illuminates when the following occurs:
• The ignition is ON.
• The vehicle speed is greater than 5 km/h (3.1 mph). The BCM receives a serial data message from the PCM/ECM indicating the vehicle speed.
• The BCM determines that the park brake is engaged.
Turn Signal On Warning
The radio activates the turn signal on audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the radio indicating the chime frequency and duration. The turn signal on warning sounds when the following occurs:
• The ignition is ON.
• The BCM detects that the turn signal is active for greater than 1.2 km (0.75 mi). The BCM calculates the distance based on a serial data message from the PCM/ECM indicating the vehicle speed.
Additional Warnings
The following warnings have an associated instrument panel cluster (IPC) indicator:
• Antilock Brake System
• Air Bag
• Brake Warning
• Charging System
• High Engine Coolant Temperature
• Low Fuel
• Low Engine Oil Pressure
• Service Vehicle Soon
The body control module (BCM) sends a serial data request to the radio indicating the chime frequency and duration of the chime. The warning sounds once per ignition cycle when an indicator illuminates.
For a description of each indicator, refer to Indicator/Warning Message Description and Operation.


Does your radio work? Can you hear sound out of driver's door speaker?

Circuit/System Description
The radio generates the audible warning through the left speaker. The radio receives audible warning requests via the serial data circuit from the instrument panel cluster (IPC) or the body control module (BCM).


Circuit/System Verification
Important: Before performing this diagnostics, make sure no indicator(s) are illuminated after the IPC performs a lamp test. If any indicators are illuminated after the bulb test, perform the indicator diagnostics before this diagnostics.
Ignition ON, headlamp switch OFF, verify the scan tool Headlamp Switch parameter is Inactive.
? If not Inactive, refer to Headlamps Malfunction.
Ignition ON, doors closed, verify the scan tool All Door Lock Command is On.
? If not On, refer to Courtesy Lamps Malfunction.
Ignition ON, radio ON, adjust the radio balance and fade to the left front speaker.
? If the speaker does not operate properly, refer to Speaker Malfunction.
Verify that the Key In Ignition Cylinder Switch parameter is Yes when the key is in the ignition and No when the key is out of the ignition.
Circuit/System Testing
Ignition OFF, disconnect the harness connector at the ignition switch.
Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 2 and ground.
? If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the power mode circuit fuse is open, test the signal circuit terminal 5 for a short to ground.
Verify the BCM scan tool Key In Ignition Cylinder Switch parameter is No.
? If not the specified value, test the signal circuit terminal 5 for a short to voltage. If the circuit tests normal, replace the BCM.
Install a 3A fused jumper wire between the signal circuit terminal 5 and the B+ circuit terminal 2. Verify the scan tool Key In Ignition Cylinder Switch parameter displays Yes.
? If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the ignition switch.

Check fuses first, cab and bay
if all good
scan the PCM .
or get it scanned.