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Discussion Starter #1
Hoping for some quick help here... my sister has a 2006 2.2L Cobalt and she just called me saying that her car is constantly beeping twice in a row over and over sort of like a warning alarm.

She told me the coolant temp is showing fine and there are no warning lights or anything on the dash. I put an aftermarket radio in it for her with whatever you call that interface module thing about a year ago and there have been no problems with it.

She said there is a clicking noise before the two beeps and all the sounds are coming from the gauge cluster area.

I'm going to be over where her car is in an hour or so, just hoping for some ideas of what to look for!

Thanks!
 

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Does this help?
Audible Warnings Description and Operation
The audible warnings alert the driver of a system concern or a critical vehicle condition. The instrument panel cluster (IPC) generates the audible warnings through an audible chime acoustic generator. The IPC receives audible warning requests via the serial data line. If the IPC 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

Fasten Safety Belt Warning
The IPC activates the fasten safety belt audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC 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 (signal circuit is low). The IPC 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 IPC activates the key-in-ignition audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC 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 (signal circuit is low).

• The BCM determines that the ignition key alarm switch is closed (signal circuit is low).

Lights On Warning
The IPC activates the lights on warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC 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 (signal circuit is low).

• The BCM determines that the headlamp switch is in the PARK or HEAD position.

Park Brake Warning
The IPC activates the park brake audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC 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 (signal circuit is low).

Turn Signal On Warning
The IPC activates the turn signal on audible warning as requested by the body control module (BCM). The BCM sends a serial data message to the IPC 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 message to the IPC indicating the chime frequency (medium rate) and duration (3 seconds). The warning sounds once per ignition cycle when an indicator illuminates and the engine is running for greater than 6.5 seconds.
 

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Discussion Starter #3
Awesome, thanks!

The good news is that it stopped... the bad news is that it stopped before I got to hear exactly what was going on.

I'll send this to her though in case it happens again. Thanks again!
 
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